Copyright: Copyright©1999. Nokia Mobile Phones. All rights reserved.
Citation: Copyright©1999. Nokia Mobile Phones. All rights reserved.


WAV Converter Help

WAV Converter is used for converting WAV files for the Nokia 9110 Communicator.

Why use WAV Converter?

What does WAV Converter do?

How to convert a WAV file?

Supported WAV file formats

WAV Converter Settings

Toolbar commands


Why use WAV Converter?

WAV Converter provides several benefits for the user:

The most important PCM, Microsoft ADPCM and Voxware WAV audio file formats are supported.

When converting a PCM WAV file, the size of the converted WAV file is usually much smaller than the size of the original file.

When playing back a WAV file with your Communicator, the quality of the sound is better.

The need for the processing power reduces remarkably because the conversion is not needed in the Nokia 9110 Communicator.


How to convert a WAV file?

1	On the File menu, click Open.

2	Write or select the name of the WAV file you want to open.

3	On the Convert menu, click Convert.

4	On the File menu, click Save As.

5	Write or select the name for the converted WAV file.

6	Transfer the WAV file to the Nokia 9110 Communicator using the PC Suite Connectivity Software or PC Connectivity Software (Nserver).


What does WAV Converter do?

WAV Converter performs the following functions on the input WAV file:

Converts from stereo to mono.

Converts the sampling rate to 8 kHz.

Converts the samples from PCM, Microsoft ADPCM and Voxware formats to A-Law format.

Maximizes the volume (or other user-selected volume level).


Toolbar commands

Opens a WAV file.

Saves a WAV file.

Converts the selected WAV file.
NOTE: During the conversion, the playback of WAV files is not possible.

Begins playing the open WAV file. If the WAV file has been already converted, the converted WAV file is played back.
NOTE: Playback function is possible for WAV files under 2 MB.

Stops the playback of the WAV file.


Supported formats

An input WAV file must have the following properties:

WAV file is in PCM, Microsoft ADPCM or Voxware format.
NOTE: Voxware WAV file must be created with the Nokia 9110 Communicator’s Voice recorder application.

Sampling rate is 8, 8.012, 11.025, 12, 16, 22.05, 24, 32, 44.1 or 48 kHz.

Number of channels is 1 (mono) or 2 (stereo).

Bit depth is 8 or 16 bits/sample (PCM), or 4 bits/sample (ADPCM).


WAV files

WAV files are audio files that are commonly used in Windows environment.


WAV file formats

Audio data in WAV files can be stored in several formats. Some of them are:

PCM (Pulse Code Modulation)
PCM format is the simplest and most common way of storing audio data in WAV audio files. Audio data in PCM format is totally uncompressed.

ADPCM (Adaptive Differential Pulse Code Modulation)
ADPCM is an encoding technique that uses only 4 bits to encode an analog sample. Instead of samples themselves, the differences between successive samples is stored in audio file.

Voxware
Voxware is an encoding technique that is used in the Nokia 9110 Communicator’s Voice recorder application. WAV Converter supports the conversion of this format through the Voxware Windows ACM driver.

A-Law
A-Law is an encoding technique that uses logarithmic formulas to convert linear PCM samples into 8-bit codes.


WAV Converter Settings

Conversion Volume Level
You can set the volume level of the converted WAV file by adjusting the slider. The most left position (Low) makes the converted WAV to be totally silent while the most right position (High) maximizes the volume.

Auto-play WAV
By checking the After open check box, the WAV file is played back when you open it. If the After conversion check box is checked, the converted WAV file is played back when the conversion has finished.