14 March 2017, 17:52 | #21 | |
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The only problem I have with Amiga audio is that low KHz samples can sound bad when played back at lower frequencies. You get this distortion that is audible at low frequencies and gradually fades out as the frequencies get higher. The bass notes in the first minute of the first tune of Odyssey by Alcatraz is a prime example (listen for the first minute): [ Show youtube player ] Sometimes I swear I can hear other musical notes in particular samples that I think weren't meant to be there, but I think that's down to the sampling source. In all, I've always been impressed by Paula, but for someone to come along and say it wasn't as good as it should've been is an insult to Jay Miner and the other Amiga engineers. |
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14 March 2017, 21:32 | #22 | |
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I'm sure that no Amiga engineers would be insulted by me calling Paula imperfect because they were fully aware of that when they designed it. Nothing is perfect and the product they ended up with was a result of various compromises which they thought provided the best overall performance, and it so happened that many people liked the choices they made. This is how all engineering works, even serious stuff like the space shuttle program was littered with compromises and imperfect solutions. |
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14 March 2017, 22:01 | #23 |
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Human technology is not perfect and full of compromises. Oh, well.
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14 March 2017, 23:06 | #24 | ||
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If I am not 100% wrong, the sound hardware design was at least in some way influenced or initiated by Bob Yannes, and when he left C= and went to form Ensoniq, he did the exact same thing on the Mirage, only that instead of a shitty cheap fixed filter, he put in a really nice Curtis controllable low pass filter. The way the Mirage works is very similar to the way the Amiga works. Why is it there? Sampling at such low resolution brings a shit ton of noise and overtones and a low pass filter makes this issue a bit better. Quote:
That distortion you mention on tha Alcatraz demo, is because someone had to make that bass audible. Try to load a perfect-looking sine wave as an Amiga sample into a tracker and try to make it be heard, it'll be real fucking hard unless you start distorting it until it approaches a pulse more than a sine. In brief, the Amiga sound is FAR from perfect, but that isn't necessarily a problem. If you want to wonder how the AMiga sound hardware could have been with not as many budget restrains put on it, check out Yannes' Mirage and see how far the Amiga sound could be taken with very few differences (mainly an improved frequency response and the controllable, resonant and ultimately expensive Curtis low pass filter) |
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15 March 2017, 06:45 | #25 |
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15 March 2017, 11:41 | #26 | ||
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15 March 2017, 15:26 | #27 | ||
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So generally speaking, yeah, an Amiga sounds a bit muffled on the high end, a bit "muddy". But so did oldschool 8 and 12 bit samplers like the Mirage or the Emu SP-1200. Quote:
But even if you had a 16-bit sampler like a Clarity 16, I am inclined to think that as long as you reproduce them with Paula you will run into the same issues. I'm not a deep tech here, so I cannot give you a more in-depth explanation, but someone on the board like pandy71 would be able to do so if that's what you want. So don't take my word for it, but I think this is because the Amiga uses pulse width modulation to reproduce audio. Do you have a Raspberry Pi with an audio out? If you do, you can see what I mean. Anything reproduced at top volume will sound OK, but start lowering the volume, and you will hear the problems. The Raspberry Pi has a really crud piezo pwm sound thingy which works in a similar way. |
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16 March 2017, 08:38 | #28 | |||
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