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-
-
- Audiotools, release 3. (early)
-
-
- This release incorporates PlaySamp to play sampled sounds.
-
- The demo creates a MEMF_CHIP set of random values to feed to the new
- function, creating noise.
-
-
- This early release is not as clean as I'd like it to be in that I have
- only compiled it under Lattice 3.03 so far. Additionally, there
- is some cleanup I'd like to do, such as merge PlayNote, PlayFreq
- and PlaySamp into a single routine since so much of them is
- common (will do this soon, and make the calls become #define's to
- the new merged function).
-
- Also, while putting this together, I found a bug in the way I was
- calculating duration of a sound. In particular, any duration greater
- than 1200 thousandths of a second could cause the calculation to go
- wrong for duration. In the function PlaySamp, I HAVE corrected
- the duration calculation, but the correction has NOT been applied
- to PlayFreq and PlayNote yet. So if you plan to use the functions
- with "any" duration over 1 second, make sure you fix the duration
- calc. in those other functions.
-
- In some future release, I may include some support for ADSR... I have the
- Commodore IFF specs and I understand (and can easily incorporate)
- the way they implement ADSR (as a set of step segments) in the IFF
- spec. I also plan to include the PD IFF 8SVX and SMUS reader
- routines on the next disk so that we can integrate reading the
- files and then use the audiotools to play the stuff.
-
- Rob Peck
-
- Sept. 13, 1987
-
-
-
- Addendum, Oct. 12, 1987...
-
- Have added a new directory, called "Kevin.Sullivan" (now RENAMED
- RELEASE.3) , containing an even later version of (early) release.3.
- This later version contains a manx-ified version of the audiotools
- (at least it compiles under Manx 3.4b with cc +L).
-
- Still have NOT applied the duration fix to PlayNote or PlayFreq.
-
- Example program is named au2.c, which includes atools.c in that
- same directory. Executable file (manx) is "au2". The program
- is designed to be the audio part to Kevin's Extra-Half-Brite
- tap-dancer animation. There is a tap sound (recorded with
- the sound sampler from Mimetics) on one channel, and some
- (admittedly sour note sometimes) music on another channel.
- In stereo.
-
- Also note that a new bug was found in the routine named GetIOB and is
- fixed in this latest version (the kevin.sullivan version) of the
- audiotools (atools.c). It removes the qualifier "MEMF_FAST"
- from the call to AllocMem. The qualifier had prevented
- DEMO.RELEASE.2 from running on machines with only 512k of memory.
- (oops).
-
- Was on vacation for folks 50th wedding anniversary. So sending
- out disks and making more updates had to wait. Sorry if I kept
- anyone waiting.
-
-
- Rob Peck.
-
-