07 August 2024, 13:21 | #1 |
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AQA released
I just released this...
AQA (Amiga Quality Audio) is (mainly) a collection of CPU-based audio playback tools for classic Amigas that stream stereo audio samples from mass storage devices through the Paula chip also at frequencies way beyond the canonical 28 kHz of the Amiga or the 44.1 kHz of CDs (e.g. 96 kHz), and with a resolution of 8 or 14 bits. AQA is therefore suitable for listening to high-quality music even on the good old classic Amigas. Download: https://retream.itch.io/amiga-tools Basic usage workflow: 1. save the audio data to listen to as uncompressed stereo 8- or 16-bit WAV files; 2. convert the WAV files to AQA files with cWAV*; 3. stream the AQA files with sAQA*. Further details in the manual, which includes also some technical information for the curious ones. |
08 August 2024, 11:33 | #2 | |
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Interesting, how does this compare in performance vs DMA audio on systems that can feed Paula samples at higher data rates (ECS Agnus/AGA Alice)? It's cool that you can get high quality audio out of OCS using this! |
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08 August 2024, 12:08 | #3 |
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This reminds me of Forrest from back in the days : https://aminet.net/package/mus/misc/Forrest
... but in a modern way Don´t really need it but I like the idea |
08 August 2024, 12:12 | #4 | ||
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Quote:
Code:
The following table shows the limits reached on a PAL Amiga 1200 with a Blizzard 1230 IV, mounting a 50 MHz 68030 and 60 ns RAM, and a CompactFlash connected to the internal IDE port. +-----------------+-----------------+--------+-----------+ | EXPANSION BOARD : AQA FILE FORMAT : PERIOD : FREQUENCY | +-----------------+-----------------+--------+-----------+ | disabled : AQA0 : 30 : 118229.83 | | disabled : AQA1 : 37 : 95862.02 | | disabled : AQA2 : 41 : 86509.63 | | enabled : AQA0 : 11 : 322445.00 | | enabled : AQA1 : 16 : 221680.93 | | enabled : AQA2 : 17 : 208640.88 | +-----------------+-----------------+--------+-----------+ (When the expansion board is disabled, the Amiga 1200 works as if it were a stock machine.) Quote:
Last edited by saimo; 08 August 2024 at 12:17. |
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08 August 2024, 12:14 | #5 | |
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It's different though: Forrest is "just" a MPEG->8SVX converter. |
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08 August 2024, 12:18 | #6 |
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08 August 2024, 12:34 | #7 | |
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However, I need to point out that AQA's goal is to allow listening to music (or any other audio data in general) at (stupidly) high frequencies - without the second part, AQA wouldn't exist |
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