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ADDITIONAL NOTES ABOUT USING MWAVE IN WINDOWS NT
(c) 1996, IBM Corp.
9:00 a.m., September 10, 1996
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INTRODUCTION
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This document provides information to help you properly run Mwave appli-
cations in Microsoft Windows NT. A list of "frequently-asked questions"
(FAQs) presents answers to questions or problems you may encounter while
working with the Mwave product. Other topics include solutions to compat-
ibility issues and installation problems, as well as additional technical
notes.
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Printing This Document
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To print this document, choose the print command from the File menu.
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Other Helpful Documents
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The following online document provides additional information about Mwave
Windows applications:
MWHELP.HLP This help file presents a general overview of all
the components in Mwave. To view this file, select
the Mwave Help icon in the Mwave program group.
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CONTENTS
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1.0 BEFORE YOU CALL FOR HELP
2.0 INSTALLATION NOTES
2.1 Installing Mwave for Windows NT
2.2 Installing MIDI Samples in Windows NT
2.3 Setting up the Mwave Modem with Windows NT
2.4 Configuring Remote Access Services (RAS) (Windows NT 3.51
only)
3.0 FREQUENTLY-ASKED QUESTIONS (FAQs)
3.1 FAQs about the Mwave Modem
3.2 FAQs about Mwave FAX Capabilities
3.3 FAQs about Mwave Audio Features
3.4 FAQs about Mwave's Telephone Country Selection Utility
4.0 COMPATIBILITY
4.1 Communications (Modem) Applications
4.2 Audio Applications
5.0 OTHER TECHNICAL NOTES
5.1 Recommendations for Optimum Mwave Modem Performance
5.2 Audio/MIDI Technical Notes
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1.0 BEFORE YOU CALL FOR HELP
======================================================================
Before you call the technical support group, please read this entire doc-
ument for any installation, configuration, or compatibility information.
Also, the FAQs provide a good basis for answering most common questions.
If the document does not provide a solution and you need to contact tech-
nical support, please have your computer running. For faster service,
have the following information ready for our technical support personnel:
o Make and model of your computer
o Mwave software version number
o Names and version numbers of application software you are running
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2.0 INSTALLATION NOTES
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Before installing Mwave on your ThinkPad, make sure that the DSP is
enabled.
o On ThinkPad 755 computers:
1. Do one of the following:
- If you are using Windows NT 3.51: From the Program Manager,
double-click the ThinkPad Setup icon. Then double-click the
DSP icon.
- If you are using Windows NT 4.0: From the Windows NT Start
menu, choose Programs-->ThinkPad-->DSP.
2. Verify that the DSP device is enabled. If not, click the Enable
radio button. Also, make sure the Modem checkbox is checked.
3. Choose the Save button.
4. Exit Windows NT and restart your computer in order for the
changes to take effect.
o On ThinkPad 760 computers:
1. Do one of the following:
- If you are using Windows NT 3.51: From the Program Manager,
double-click the ThinkPad (Common) group icon. Then double-
click the ThinkPad Features icon.
- If you are using Windows NT 4.0: From the Windows NT Start
menu, choose Programs-->ThinkPad-->ThinkPad Features
2. Click the Modem button. Verify that the modem is enabled. If
not, click the Enable radio button.
3. Choose the OK button.
4. Exit Windows NT and restart your computer in order for the
changes to take effect.
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2.1 Installing Mwave for Windows NT
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To run Mwave under Windows NT, your computer must have a minimum of 16 MB
of RAM. To install:
o If you are using Windows NT 3.51, select Run from the Program Manag-
er's File menu.
o If you are using Windows NT 4.0, select Run from the Start menu.
o Type a:\setup in the Open field of the Run dialog.
o Place installation disk #1 in your disk drive
o Click OK
NOTE: To support suspend/resume power management on 760 series
computers, please assure the ThinkPad Utility is installed.
To support suspend/resume power management on 755 series
computers, please assure ThinkPad Power Management (from
the ThinkPad Power Management Support Diskette) is installed.
NOTE: For Windows NT, the DAA options diskette is not required.
NOTE: Non-US users must install Mwave, reboot, then run the Country
Selection Application and reboot again.
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2.2 Installing MIDI Samples in Windows NT
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In order to use MIDI, you must install the MIDI Samples. This is a sepa-
rate installation.
o To install the Mwave MIDI Samples with Windows NT 3.51:
1. Insert the MIDI installation disk in your floppy drive
2. From the Windows NT Program Manager, choose File-->Run.
3. Type a:\setup in the RUN window.
4. Respond "Yes" or "No" when asked if you wish to use the samples.
5. Shut down Windows NT and restart.
o To install the Mwave MIDI Samples with Windows NT 4.0:
1. Insert the MIDI installation disk in your floppy drive.
2. From the Windows NT Start menu, choose Run.
3. Type a:\setup in the Run window.
4. Respond "Yes" or "No" when asked if you wish to use the samples.
5. When the installation is complete, use the Windows NT Control
Panel to select the Mwave MIDI Synthesizer as the default MIDI
device:
a. From the Windows NT Start menu, choose Settings-->Control
Panel.
b. Double-click the Multimedia icon.
c. Click the MIDI tab.
d. Click the Single Instrument radio button if it is not already
selected.
e. Verify that "Mwave MIDI Synthesizer" appears in the box
directly beneath the Single instrument radio button. If not,
select the Mwave MIDI Synthesizer entry in the list box and
then choose OK.
6. Shut down Windows NT and restart.
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2.3 Setting up the Mwave Modem with Windows NT
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After installing Mwave and the MIDI samples, you will need to set up the
Mwave Modem to work with Windows NT. (Windows NT does not provide a way
for the Mwave installation program to do this for you automatically.) To
set up the modem, you will need to do one or both of the following,
depending on which version of Windows NT you have:
o Configure the communications port
o Set up Unimodem support (Windows NT 4.0 only)
Once you have completed these procedures, you should be able to use your
Mwave Modem with all modem communication applications supported by the
version of Windows NT that you are using. Any known exceptions are noted
in the Compatibility section of this Readme.
CONFIGURING THE COMMUNICATIONS PORT
Use the ThinkPad Setup utility (for ThinkPad 755 computers) or ThinkPad
Features program (for ThinkPad 760 computers) to select a COM port for
your modem. Then use the Windows NT Control Panel to define the same
port. Once you have completed this procedure, you can use communications
applications that do not require Unimodem support.
If you are using a ThinkPad 755, follow these steps. Then move on to the
COM port verification procedure.
1. Do one of the following:
o If you are using Windows NT 3.51: From the Program Manager,
double-click the ThinkPad Setup icon. Then double-click the DSP
icon.
o If you are using Windows NT 4.0: From the Windows NT Start menu,
choose Programs-->ThinkPad-->DSP.
2. Choose one of the COM ports shown in the Telephony Function box. A
message appears if the COM port is already in use.
3. Choose the Save button.
If you are using a ThinkPad 760, follow these steps. Then move on to the
COM port verification procedure.
1. Do one of the following:
o If you are using Windows NT 3.51: From the Program Manager,
double-click the ThinkPad (Common) group icon. Then double-click
the ThinkPad Features icon.
o If you are using Windows NT 4.0: From the Windows NT Start menu,
choose Programs-->ThinkPad-->ThinkPad Features
2. Click on the Modem button. (It looks like a handset phone.)
3. In the Internal Modem dialog box, choose a COM port.
4. Click on the OK button.
To verify the COM port that you have chosen, follow these steps:
1. Do one of the following:
o If you are using Windows NT 3.51: In the Main group, double-click
the Control Panel icon.
o If you are using Windows NT 4.0: From the Windows NT Start menu,
choose Settings-->Control Panel.
2. Double-click the Ports icon.
3. Verify that the list of COM ports includes the COM port that you
chose in your ThinkPad setup. If not, choose the Add button. If the
port is listed, double-click it.
4. On the Advanced Settings dialog box, choose settings as shown in the
following table:
BASE I/O
COM PORT PORT ADDRESS IRQ
COM1 03F8 4
COM2 02F8 3
COM3 03E8 4
COM4 02E8 3
5. Select the FIFO Enabled check box.
6. Choose the OK button.
If you have made any changes, you must shut down and restart the computer
in order for the changes to take effect.
SETTING UP UNIMODEM SUPPORT (WINDOWS NT 4.0 ONLY)
Complete the following procedure in order to use communications applica-
tions such as HyperTerminal and Dial-Up Networking that use the Unimodem
facility of Window NT 4.0.
1. From the Windows NT Start menu, choose Settings-->Control Panel.
2. Double-click the Modems icon.
If no modem is installed, the Install New Modem dialog appears. If
you already have a modem installed, choose the Add button to open the
Install New Modem dialog.
3. Choose the Next button.
Windows NT starts searching for the modem. When successful, it
reports that it has found a modem of type "IBM ThinkPad 28.8 Mwave
Data Fax."
4. Choose the Next button and follow the remaining online instructions.
NOTE: If Windows NT fails to detect a modem, verify that you configured
your communications port correctly, and then repeat the above procedure.
Remember that the changes you make when configuring the communications
port do not take effect until you restart Windows NT.
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2.4 Configuring Remote Access Services (RAS) (Windows NT 3.51 only)
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Remote Access Services (RAS) is the Windows NT 3.51 facility that allows
users to connect to a LAN server from a remote location. You can install
RAS as part of the Windows NT 3.51 installation, or you can install it
separately at a later time, either before or after installing Mwave.
Whenever you install RAS, RAS attempts to detect a modem and fails. Even
if you install RAS after installing the Mwave Modem, RAS fails to detect
the modem because the RAS installation overlays the Mwave MODEM.INF file.
Follow the procedure for reconfiguring RAS settings (second bullet below)
in order for RAS to recognize the Mwave Modem.
o Installing RAS
If RAS was not installed during Windows NT 3.51 installation, you can
install it separately (either before or after you install Mwave) by
following the procedure below.
1. In the Main group, double-click the Control Panel icon. Then
double-click the Network icon.
2. Select Add Software.
3. Select Remote Access Services.
4. When prompted, select any COM port.
At this point, RAS attempts to detect a modem and fails. This is
correct for now even if you have already installed Mwave.
5. Click OK.
6. When RAS displays a list of modems to choose, select any modem
from the list. Click OK and then click Continue.
RAS will complete installation.
o Configuring RAS Settings for the Mwave Modem
The procedure for configuring RAS with the Mwave modem includes an
extra step (step 1 below) if you installed RAS after installing
Mwave. When installed in this order, the RAS installation overlays
the MODEM.INF file that was installed as part of the Mwave installa-
tion. However, there is an extra copy of the MODEM.INF file that you
can move to the proper directory.
NOTE: Before you begin, make sure that you have configured a commu-
nications port for the Mwave Modem. See "Configuring the Communi-
cations Port" under 2.3, "Setting up the Mwave Modem with Windows
NT."
1. If you installed RAS after installing Mwave, copy the MODEM.INF
file from \MWW32\MODEM to \WINNT35\SYSTEM32\RAS.
2. In the Main group, double-click the Control Panel icon. Then
double-click the Network icon.
3. Select Remote Access Services and click the Configure button.
4. Click the Add button and select the COM port used with the Mwave
Modem (normally COM2).
RAS will search for a modem on the selected COM port and detect
the Mwave Modem.
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3.0 FREQUENTLY-ASKED QUESTIONS (FAQs)
======================================================================
This section contains answers to questions about certain features and
capabilities provided by Mwave applications.
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3.1 FAQs about the Mwave Modem
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Q: What should I do if I answer an incoming phone call with the handset
and then discover that the call is a fax or modem transmission?
A: Fax machines and modems are usually set up to call back several times
if they fail to make a connection. Therefore, hang up and, when the
fax machine or modem calls back, allow the PC to answer the call.
Q: What is the transmission speed for Mwave Voice Over Data?
A: Mwave Voice Over Data is limited to 14.4 kbps.
Q: Why don't I hear modem sounds when I run the Microsoft Hardware
Compatability Test (MHCT) for the modem?
A: The MHCT tests the modem's M2 command. M2 is the command to keep the
speakers on all the time. Mwave's DSP maps the M2 command to M1,
which commands no sound when the modem is connected. Therefore, no
sound is heard when tested.
Q: What settings do I need to use when I install communications software
(such as HyperTerminal)?
A: Your communications software requires that you provide a modem type,
a communications speed (the number of bits per second to be trans-
mitted between the communications application and the modem), and the
COM port to which the modem is attached.
o Modem Type
The following list ranks modem types, starting with the most pre-
ferred setting. Select the highest ranking setting available with
your communications software.
1. Mwave modem
2. Generic Hayes-type modem
3. User-defined modem
4. Hayes SmartModem 2400
5. Hayes modem
6. Hayes compatible modem
7. Other
NOTE: If you select a modem type of Other, you must include
the proper modem initialization string. For most applica-
tions, the initialization string "AT&F" will work. See the
Mwave Modem online help for more information.
o Communications Speed
The communications speed you specify depends on whether or not
your modem will be using data compression. Most communications
software applications provide a means (usually a checkbox) for you
to enable or disable modem data compression.
- If you have chosen to enable modem data compression, you can
specify a communications speed that is up to four times the
actual baud rate that the modem will be using. For example,
if the modem will be communicating at 28,800 bps, specify
115,200 bps, or the maximum setting offered by your communi-
cations software.
- If you have chosen to disable modem data compression, specify
a communications speed equal to the baud rate of the modem
connection.
o COM Port
Specify the same COM port that you selected when setting up the
modem.
Q: What can I do if my 300 baud modem connections are unreliable?
A: Use the next higher setting (or baud rate) and try again. It is recom-
mended that you use the highest possible setting of your Mwave Modem.
Q: What port speed should I use when I connect my modem at 2400 bps?
A: If you attempt to force the modem to connect at 2400 bps by setting
the port speed to that value, the connection may not be made or it may
fall back to 2400 nECL or 1200. To avoid this problem, set the port
speed to a higher value.
Q: What host application transfer protocol is recommended for best Mwave
Modem performance?
A: For best throughput when sending or receiving data, select the
highest-ranking available transfer protocol listed here.
1. ZMODEM
2. Kermit
3. Ymodem-G
4. TEXT
5. ASCII
6. XMODEM (only as a last resort)
For more information, see Section 5.1 Recommendations for Optimum
Mwave Modem Performance.
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3.2 FAQs about Mwave FAX Capabilities
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Q: What setting should I use for the "fax/modem type" when I set up my
Class 2 FAX software to work with Mwave if "Mwave Modem" isn't listed
as an option?
A: For all FAX applications, if "Mwave Modem" is not listed, select
"Generic Class 2" or some comparable label from the application's list
of supported fax/modems.
Q: What should I do if I answer an incoming phone call with the handset
and then discover that the call is a fax or modem transmission?
A: See first Q & A in the above section, FAQs About the Mwave Modem.
Q: What are Mwave's fax restrictions?
A: Mwave supports fax transmissions of monochrome text and images up to 8
1/2 inches wide (A4 width). Mwave does not support B4 width trans-
missions.
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3.3 FAQs about Mwave Audio Features
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Q: Why do I receive an error message when I try to play an Mwave
Synthesizer Samples .WAV file in a Wave audio application?
A: The Mwave Synthesizer uses samples in the form of *.WAV files
installed on the hard disk to play music. These WAV files are
intended solely for use by the synthesizer and are formatted correctly
for this purpose. However, if for some reason a user tries to use an
audio application to play the *.WAV files individually, the applica-
tion may respond with an error message. This does not indicate a
problem in using the files for their intended purpose.
Q: How can I prevent the noise in my 8 bit recordings?
A: An 8 bit recording is naturally noisy. To reduce the noise level of
your recording, use 16 bit recording.
Q: Why do I hear pauses when I play an audio wave (.WAV) recording from a
floppy diskette?
A: These pauses during playback occur due to the slower rate of data
transfer from the diskette. To fix the problem, copy the wave (.WAV)
file to your hard disk.
Q: Why does my .WAV file I just recorded sound "broken"?
A: "Broken" or discontinuous sound is often the result of either the
slower data transfer rate from a floppy drive, or you recorded the
.WAV file to a drive that is compressed (using compression programs
such as DriveSpace, DoubleSpace, or Stacker). In both cases, the play-
back application cannot receive data fast enough and, as a result, you
hear the gaps in the transaction.
To fix this problem, you can:
o Record the .WAV file to a fixed disk (i.e., C: ).
o Lower the record rate to 22 KHz or 11 KHz, change to 8 bit, and/or
change to mono sound. Most applications allow you to adjust these
parameters, and less taxing record rates may solve the problem.
o If you use a disk compression program (such as DriveSpace,
DoubleSpace, or Stacker), direct the recorded data to an uncom-
pressed drive. This way, the computer can process the sound
without taking the time to uncompress/compress the information.
Refer to Section 5.2 Audio/MIDI Technical Notes for additional tech-
nical information.
Q: Why don't I hear sounds from my CD when the Mwave Modem is also
running?
A: Mwave manages the workload of the digital signal processor, the device
that allows you to play sound, use telephony, etc. If you don't hear
sounds from your CD, it is likely that Mwave is using the modem to
send a file or has set the modem to answer the telephone.
Wait for these other tasks to finish. You should then hear the sounds
from your CD.
Q: Why does the volume on 8 bit recordings seem softer than 16 bit
recordings?
A: Most prerecorded 8 bit wave files, like those included with applica-
tions or Windows, are compressed to improve their signal-to-noise
(S/N) ratio. These compressed files are much louder than the uncom-
pressed audio (wave, synthesizers, MPEG) in the system.
To compensate for loud prerecorded 8 bit audio, Mwave tasks reduce the
playback level of all 8 bit recordings. The volume reduction is done
with 16 bit precision, so the S/N ratio is NOT reduced. The reduced
and compressed 8 bit audio plays slightly louder than typical uncom-
pressed 16 bit audio, and slightly reduces the volume of uncompressed
8 bit audio.
Q: What happens if I change the input source of the mixer during
recording?
A: Changing the input source results in muting of the audio. If you inad-
vertently do this, restart Windows to recover.
Q: How do I stop feedback from occurring when I use my microphone?
A: Lower the peak levels for playback and record for your microphone.
1. Do one of the following:
o If you are using Windows NT 3.51: From the Windows NT Program
Manager, select Mwave Program Group-->Mwave Audio Control.
o If you are using Windows NT 4.0: From the Windows NT Start
menu, select Programs-->Mwave-->Audio Control.
2. Select the MIC button.
3. Click and drag the microphone (MIC) slide controls to a lower
level.
4. Resume using the microphone.
(Note: When the play pushbutton is selected, make sure that the
microphone check box is not selected.)
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3.4 FAQs about Mwave's Telephone Country Selection Utility
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Q: What is Country Selection?
A: The Mwave Telephone Country Selection program is used to set country
specific parameters for Mwave telephony functions (Modem and FAX).
**********
WARNING: Improper selection of the telephone network may cause
********** unreliable operation.
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4.0 COMPATIBILITY
======================================================================
Read through this section if you have any problems with a specific appli-
cation working with Mwave.
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4.1 Communications (Modem) Applications
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o Connecting to Prodigy
When attempting to use the Mwave Modem to connect to Prodigy using a
2400 bps Y (Tymnet) connection, the connection fails. Contact
Prodigy support for assistance in solving this problem.
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4.2 Audio Applications
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The following problems exist when using audio. These problems will be
corrected in a future release of the Mwave support for Windows NT.
o When an audio mixer application is running (such as the Windows NT
Volume Control applet or the Mwave Audio Mixer), you may notice a
delay of several seconds when you start playing a Wave (.WAV) file.
This delay is especially noticeable if you have enabled system sounds
and assigned a sound to a frequent event such as the opening of a
pop-up menu. Playback performance returns to normal after you close
the mixer application.
o When using some applications to record wave files (such as the
Windows NT Sound Recorder applet), wave files recorded in the 8-bit
mono format contain audible "clicks." This problem does not occur
when using 8-bit stereo, 16-bit mono, or 16-bit stereo formats.
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5.0 OTHER TECHNICAL NOTES
======================================================================
This section provides additional technical information and support for
specific uses of Mwave functions and/or applications.
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5.1 Recommendations for Optimum Mwave Modem Performance
----------------------------------------------------------------------
IBM recommends the following settings or conditions for best performance
from your Mwave Modem:
o For best throughput when sending or receiving data, select the
highest-ranking available transfer protocol listed here.
1. ZMODEM
2. Kermit
3. Ymodem-G
4. TEXT
5. ASCII
6. XMODEM (only as a last resort)
o You should enable Hardware Flow Control. Use the Hayes command
AT\Q3, or follow these steps in Windows NT:
1. Do one of the following:
- If you are using Windows NT 3.51: In the Main group double-
click the Control Panel icon.
- If you are using Windows NT 4.0: From the Windows NT Start
menu, choose Settings-->Control Panel.
2. Double-click the Ports icon.
3. Double-click the port for the modem, or select the port and
choose the Settings button.
4. Click the scroll arrow to the right of the Flow Control box and
select Hardware.
5. Choose the OK button.
o Select a modem protocol from this list, with (1) providing the best
performance, and (6) giving the worst.
Protocol AT Commands use to get protocol
------------------------------------------------------------
1. V.42 / V.42bis AT\n7"H3
2. MNP 1-4 / V.42bis AT\n3"H3
3. MNP 1-4 / MNP5 AT\n3"H0
4. V42 AT\n7"H0
5. MNP1-4 AT\n3%C0"H0
6. non-error corrected AT\n0
Refer to the online help available in Mwave Modem for explanation of
the AT commands required to use one of the above modem protocols.
o Trouble Connecting at 28.8 kbps
If you experience difficulties connecting at a modem speed of 28.8
kbps to a particular number, or if you have trouble connecting to a
particular modem rotary, try the following.
- If the connection is not made and the speaker is OFF:
1. Disable V.42 bis and MNP 5 using AT"H%C
2. Disable V.42 (AT\N3) or MNP 1-4 (AT\N5). You could also
disable both with AT\N.
- If the connection is not made and the speaker remains on:
1. Reduce the maximum modem throughput using the AT commands
ATS28=18 (for 26400 bps), ATS28=17 (24000 bps), ATS28=16
(21600 bps), or ATS28=15 (19200 bps).
2. If you've tried step 1 and it still does not connect, use
AT*TH8 to control the speed.
Once you connect using the AT*TH8 command, remember to reset
your modem using either AT&F (for factory defaults) or
AT*TH4. If you forget to reset, your next calls will transmit
at lower V.34 connection rates.
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5.2 Audio/MIDI Technical Notes
----------------------------------------------------------------------
o Additional Memory Requirement for Complete MIDI Sample Set
The Mwave internal sampled sound synthesizer comes equipped with a
complete General MIDI sample set. Depending on how extensively this
capability is used, up to 3 MBytes of memory may be required. You
can improve MIDI performance by shutting down the modem or any active
sound applications.
o Recording Audio
Successful recording of audio Wave (.WAV) files depends on a variety
of factors including processor speed, amount of free disk space, data
fragmentation on the hard disk, and the type of application used.
Some computers, particularly those with slower processors, either
"hang" the system or produce recordings with gaps. These conditions
occur when using high data rates, such as 44 KHz, which means the
computer cannot keep up with the data transfer. If you attempt to
record 44 KHz 16 bit stereo Wave files using a slower PC, you may
encounter problems.
Here are some tips that may improve recording:
- Erase unnecessary files from your hard disk.
- Lower the record rate to 22 KHz or 11 KHz, change to 8 bit,
and/or change to mono sound. Most applications allow you to
adjust these parameters.
- Be aware that mixer options such as Effects, QSound, and Tone
affect the quality of playback.
- Use an alternative audio recording application. Audio programs
use a variety of techniques to record and playback sound. Some
may work well in situations where others fail to perform. For a
basic test, try recording with the Windows Sound Recorder.