adpcmvarmono.dsp

Play a variable-rate compressed 4-bit Intel/DVI format sample.

Function

This instrument plays a variable rate sample that has been previously compressed to a 4-bit Intel/DVI format. Run the SoundHack program to compress a sound sample from 16 bits to 4 bits (Intel/DVI format). This instrument plays this compressed sample, and it uses the decodeadpcm.dsp library routine to do the necessary decompression.

Knobs

Frequency: Frequency in fixed point phase increment in the range of 0..$8000. $8000 equals the normal sample rate, with 1 sample per frame. Defaults to $2000 which is 1/4 normal rate.

Amplitude: 0..$7FFF. Defaults to $7FFF.

Outputs

Output

Input FIFOs

InFIFO

Resources

Ticks: 108

Code: 70 words

Implementation

V24

Notes

Unlike other sample player instruments this one doesn't support playing the sample above the system sample rate.