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Pocket Recorder; Changing The Effects On The Waveform - Texas Instruments TravelMate 4000M User Reference Manual

Texas instruments user's reference guide notebook computer travelmate 4000m.
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Pocket Recorder is a Windows application for recording
waveform data in 8 or 16-bit format. Pocket Recorder can
splice and blend files together for interesting audio effects.
With Pocket Recorder's compression and decompression
feature, you can record and play back 16-bit sound files at
higher audio frequencies using a fraction of the memory
space.
To start Pocket Recorder, double click on the Pocket
Recorder icon in the JAZZ group. To exit from Pocket
Recorder, select Exit from the File menu.

Changing the Effects on the Waveform

In both the Higher and Lower commands, the total duration
of the sound wave is held constant. The pitch alteration is
achieved by removing every other wave sample to raise the
pitch or by doubling each wave sample to lower the pitch.
In both cases, this process changes the waveform's
duration. The technique used in the Faster and Slower
commands is applied here to restore the waveform to its
original duration with its new modified pitch.
By using the Higher and Lower command in conjunction
with the Faster and Slower command, the pitch and
duration may be changed together. This is a more common
feature found in other waveform applications. To get these
effects with Pocket Recorder, the best results are obtained
by applying the combinations in the following sequences:
For increased rate and pitch, use first Higher followed
by Faster.
For decreased rate and pitch, use first Slower followed
by Lower

Pocket Recorder

Pocket Recorder
Sound 10-3

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