The audio recorder, Introduction – EXP Computer AudioDrive Ver. 3.0 User Manual
Page 18
Audio Applications 3.0
User Guide
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The Audio Recorder
Page 12
3: The Audio Recorder
Introduction
The Audio Recorder enables you to record, compress, store and playback
voice, music, and other sound. It provides settings for sound attributes such
as mono/stereo, compression level, and sampling rate. You can use it to
embed sound objects in documents created in applications that support object
linking and embedding (OLE). The Audio Recorder's record, edit and
playback capabilities are compatable with the Windows Sound Recorder and
other recorders that record and playback in the PCM format.
The Audio Recorder can record to and playback from both .WAV and .AUD
formats. .WAV is the Microsoft Windows 3.1 audio file format. The .AUD
format uses ESPCM/ADPCM compression to produce an audio file. The
Audio Recorder provides a choice of linear PCM, ADPCM and low, medium
and high ESPCM compression.
The following chart shows the capabilities of the AudioDrive on-chip
compression/decompression feature:
Compress/Decompress Format
ES688
ES1488
ES488
ESPCM Low (4-bit) Record
Yes
Yes
Yes
ESPCM Low (4-bit) Playback
Yes
Yes
Yes
ESPCM Medium (3-bit) Record
No
No
No
ESPCM Medium (3-bit) Playback
Yes
Yes
Yes
ESPCM High (1-bit) Record
No
No
No
ESPCM High (1-bit) Playback
Yes
Yes
Yes
ADPCM Record
No
No
Yes
ADPCM Playback
Yes
Yes
Yes