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Started by GUNHED, 17:50, 18 February 21
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Quote from: Animalgril987 on 19:01, 25 April 21@VintageAdvantage Hardware Envelopes can be specified in both BASIC ( ENV command) and firmware ( SOUND_AMPL_ENVELOPE (CALL &BCBC))
Quote from: Animalgril987 on 19:01, 26 April 21@VintageAdvantage , I quote from the CPC464 User Manual (Chapter 8, page 15 in the 2nd Edition):" The second form specifies an envelope section to be executed directly by the sound hardware, where <hardware envelope> is the value to be set into the envelope shape register (register at, octal).<envelope period> is the value to be set into the envelope period registers (registers 13 & 14, octal)."The registers mentioned are the PSG HARDWARE envelope control registers.Alan.
Quote from: VintageAdvantage on 07:03, 23 April 21Regarding the Music Machine, it has some limitiations: http://www.cpcwiki.eu/imgs/c/c7/Music_Machine_Manual.pdf- for example, Page 28: (e) Using a MIDI Synthesizer, you may play 2 MIDI Machines notes simultaneously - on Page 36: The total [PCM sample] duration is 1.2 seconds (24 KBs of RAM left) Our MIDI AY CPC demo program uses all 3 AY voices (plus 3 more with Speak&SID from the SID chip... work in progress) So much for polyphony Well, the AY has only 3 voices, and it seems you can also play a PCM Sample over MIDI. Of course, this is monophone... the Amdrum allowed for up to 3 PCM voices to be mixed together "on the fly" if I remember correctly. So this is a bit more limited than the Amdrum wrt PCM playback it seems. Well, it's a cool device for sure, for the time, but has severe limitations. The biggest drawback regarding MIDI IMHO is that you cannot really playback any standard MID files with it. This is what I am looking for. AS there are so many fun MIDs available. Nobody wants to use a clunky slow CPC editor to input some 3channel MIDI song by hand or one note at a time with a step sequencer (not realtime recording). Besides, if you would add a chip such as the VS1053B then you would also have a GM MIDI synthesizer on board. This is what SymbiFace 3 has. For MP3, but they can also do MIDI. AFAIK, they stream the MIDI from the SDcard though, not from the CPC, which basically turns it into a SDcard MIDI jukebox then? Not sure that's the case. MIDI is only interesting if it is being generated / processed by the CPC IMHO, and not coming from SDcard which the firmware of the expansion card accesses.And, unlike MP3, for MIDI it is a realistic option that the CPC generates / streams it, and not only initiates a "playback from SDcard" command to the firmware. For MP3, the file sizes are of course prohibitive from a CPC point of view. So SDcard-based MP3 playback it is, like in LambdaSpeak. Even with 4 MB CPC memory expansion it would be insane of trying to attempt to playback / stream MP3 from the CPC memory PCM samples and MIDI are a different story IMHO - see Amdrum, Music Machine, ....
Quote from: GUNHED on 19:52, 28 April 21New firmware, new software. See Michaels and my homepages please.Comments are always welcome.
Quotehttp://futureos.de --> Get the revolutionary FutureOS (Recent update: 2021.01.24)http://futureos.cpc-live.com/files/LambdaSpeak_RSX_by_TFM.zip --> Get the RSX-ROM for LambdaSpeak :-) (Updated: 2021.04.27)
Quote from: RetroCPC on 01:35, 29 April 21The original fairlight sampler had less then a second or so of sampling memory, and its pretty much responsible for the age of electronic sampled music...
QuoteIts said that Drum samples require less about 100ms... sounds a little short to me, but then it gives an idea...
QuotePersonally I like the idea that the CPC is doing the real work (sampling), rather then just acting as a controller...
Quote from: RetroCPC on 03:45, 30 April 21WRT the Fairlight I was accidentally careful to say "sampled music" as a quick read of the links it appears that the PPG 340/380 used wave synthases (earlier design seemed to based on more traditional oscillator type designs) there seems to be no mention of PCM sampling - not sure about the synclavier, but really interesting as its the first I've heard Wolfgang Palm... which is sad I guess!
QuoteI've schematics somewhere for the early fairlight (they are available on the internet - a French guy seems involved with legacy support IIRC) where 8bit sampling - with later fairlight 3 being 16bits, not sure there was ever a 24bit fairlight...
QuoteBack to the CPC I think CPU power is more limiting them memory for higher quality samples - 8bit with decent dither can give surprisingly good results, so the question is whats more important higher sample rate or greater bitdepth.... (sure ideally both - but we are living in the world of the Z80)... Unless we are back to the CPC just being a controller of some kind!There is something very endearing about the AmDrum - maybe I'm just being nostalgic It be interesting to try using a say a 24bit ADC and dither down to 8bits with a small FPGA and see if it offered a noticeable improvement over the simple 8bit ADC used in the musicMachine... would give us manageable sized audio samples for the CPC.
Quote from: RetroCPC on 03:45, 30 April 21but really interesting as its the first I've heard Wolfgang Palm... which is sad I guess!
Quote from: RetroCPC on 20:38, 06 May 21Very interesting chips...What do you think of the SAM5504B?
Quote from: GUNHED on 02:15, 07 May 21Dream Blaster (X2)
Quote from: GUNHED on 02:15, 07 May 21Just hope that you and Michael can create an TextToSpeech replacement for a decent price. Seems that the promotion is over, and won't come back in time.
Quote from: GUNHED on 14:14, 07 May 21Most of us are old, times are passing quickly.
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