Thread
http://web.archive.org/web/20010428012718/http://www.d-soundpro.com/

download locations:
http://archive.info-mac.org/gst/snd/d-soundpro-351.hqx
http://ftp.vim.org/pub/ftp/ftp/infomac/_Graphic_&_Sound_Tool/snd/d-soundpro-351.hqx
manual:
http://web.archive.org/web/20010428012718/http://www.d-soundpro.com/MAINIDX.htm

download locations:
http://archive.info-mac.org/gst/snd/d-soundpro-351.hqx
http://ftp.vim.org/pub/ftp/ftp/infomac/_Graphic_&_Sound_Tool/snd/d-soundpro-351.hqx
manual:
http://web.archive.org/web/20010428012718/http://www.d-soundpro.com/MAINIDX.htm
Quote
D-SoundPRO is a professional Audio Sound Editor, Software Synthesizer, Wave Generator and samplers MIDI/SCSI network manager. Its features are:
Load/Save AIFF, SDII and .WAV mono/stereo 8/16 bits sound files up to 48 kHz
Akai, E-MU, Kurzweil, Roland, SMDI, Yamaha SCSI sample dump supports
MIDI SAMPLE DUMP STANDARD (also with Yamaha SY sample headers) and S50, S550, S330 MIDI supports
Virtual Synthesizer module, to play samples from the Mac Keyboard or from MIDI (also from a sequencer running on the same Mac), including a real time AmpENV ADSR module.
Midi Notes, Pitch Bender, Sustain Pedal real time midi messages support to play the Virtual Synthesizer
Import/Export sounds from 3 1/2 Roland® Samplers Disks (W30, S50, S550, S330)
Import/Export sounds in RAW format
Sophisticated and undoable sample edit & clipboard management with Redo function
Floating palettes for edit tools, loops monitoring, sample info, and Virtual Keyboard.
X-Fade looping algorithm with programmable window length & X-fade coefficient
Time Stretching (with old/new BPM tempo input parameters) and Frequency Shifting parametric algorithms by a Spectral Resynthesizer
DSP Mono, Stereo, MultiTap Delay, Stereo Chorus, Early Reflection Reverbers and Stereoizer effects
LowPass, BandPass, HighPass and BandReject analog filter simulation with feedback up to self resonance (-12, -24, -36, 48 dB/oct selectable curves)
Full Parametric (Freq, Q, Gain) three ways and 7 Bands Graphic Equalizers (+/- 18dB)
Rhythm loop for fast auto looping of musical audio file.
Detect BPM function, to know which is the tempo from an audio file
HQ Digital Oscillator functions to generate new synthesized sound waves (up to 10 detunable SW oscillators at the same time!)
Resample using interpolation
Pitch conversion
Normalization
Complex sample extraction functions
Zooms and visual tools
Full OMS 1.2 (or better) optional support
It is a FAT application - it runs native on PowerMac
Japanese and Italian versions available (German and French very soon)
User Manual included
System requirements: System 7.1, SoundManager 3.1 and a 68020 MAC supporting 16 bit audio (68030 mac recommended for MIDI and PowerMac for full performaces).
Optional: MIDI interface and synth supporting MIDI Sample Dump Standard, a MAC with sound inputs, OMS 1.2 (or better), FreeMidi 1.34 (or better).
D-SoundPRO is a program which is distributed as SHAREWARE. This version is fully operating. You are permitted to use it on a trial basis for up to 15 days. If you wish to continue using this product beyond that period, you are expected to pay a registration fee of $39 (the update fee for version 2.x registered users is $10). Just download and try it for free!
And best of all DSP Quattro is available for Mac OS 9:
https://www.soundonsound.com/reviews/i3-dsp-quattro
and his web page says:
Previous DSP-Quattro versions are available upon request.
https://www.soundonsound.com/reviews/i3-dsp-quattro
and his web page says:
Previous DSP-Quattro versions are available upon request.