New A-EON Music Card for Classic Amigas

[wawrzon]

many later SDL games/apps use compressed audio for background music.

Exactly. If such a port has ro be explicitely linked to your library to make use of the hardware then it will likely not work otherwise eben without sound. Independent ports will be needed ans ade to tue whole mess.

[itix]

then i dont see an advantage in this kind of device. it is like warpup, only making difference on very few dedicated tasks and everything tat wants to use it must be specifically recompiled against it. why not just buy a standalone $5 mp3 player instead? you can even place it somewhere weithin your amiga if you really must.. otherwise it gets seriously integrated into the system or let it be.

DSP decoders are more like a bonus than an advantage. It can be good buy if you dont have a sound card.

[nicholas]

still this has to be called explicotely, no existing app will take advantage of it.



Sounds like hacking. If if theres is none then create reasonable abstraction instand to bind your implementation to the particular hardware, that will create another gap among amiga users and another app versions hell fort tue users to fight with..

An MHI driver might be a good option.

http://aminet.net/package/mus/play/mhi_dev

[spirantho]

An MHI driver might be a good option.

http://aminet.net/package/driver/audio/mhi_MASPro

Now that looks like it might be a good system to use too. I'll see what I can do.

Thanks for the idea!

[skolman]

delfinampeg.device is what I currently use - source code is available if you need some reference material: http://aminet.net/package/mus/play/dmdev

AIFF-SSND & AIFF-ADP4 Intel/DVI ADPCM sound player and source code
http://aminet.net/package/mus/play/DelfAIFF

[amigakit]

Hi,

Prisma Megamix sound card has been modified, due to customer feedback to have an optional SPDIF expansion module.

Here is picture of latest prototype with the new SPDIF module plugged onto top of card:

[Gulliver]

Hi,

Prisma Megamix sound card has been modified, due to customer feedback to have an optional SPDIF expansion module.

I dont see the point of a SPDIF module. There are lots of inexpensive spdif encoders and decoders which cost $20 USD including shipping (just take look in the evil bay). So I believe this module is reasonable if it costs less than $20 USD.

[spirantho]

I'll need to check exactly how the S/PDIF interfaces with the rest (I don't have this module yet), but if it reads raw data then it means a purely digital pathway from the sound generation through to the receiver. That means no interference or noise - and that's a pretty good thing if you like listening to your music loud!
Even if the pathway from the decoder to the S/PDIF is analogue, it should still pick up a lot less noise than analogue wiring coming out the back of your Miggy.

[UberFreak]

The point of SPDIF is to use an external (usually superior) DAC.
If this module does AtoD I dont see the point.
Why go through analog at all? just keep it digital all the way to the output, thats how I like it

@Amigakit:
Do you have any specs on the SPDIF output?
Will it support 24bit/96Khz or even 24/192 (provided the source is of the same specs, of course)?

[Erol]

Technically it should support 20bit Audio by default,   24bit i guess is what we want to know.

I wanna know how much the card will cost.. and when can we order one?


S/PDIF is meant to be used for transmitting 20-bit audio data streams plus other related information. To transmit sources with less than 20 bits of sample accuracy, the superfluous bits will be set to zero. S/PDIF can also transport 24-bit samples by way of four extra bits; however, not all equipment supports this, and these extra bits may be ignored.

[Iggy]

Can someone explain the basic functions of and the advantages to this device?
I have been using standard sound chips too long and I'm baffled as to why you would want something like this.

[XDelusion]

Can someone explain the basic functions of and the advantages to this device?
I have been using standard sound chips too long and I'm baffled as to why you would want something like this.

 

 I'm interested in it merely for the novelty of playing MP3's with minimal CPU grinding on my classic Amiga. Though my hope is that this ends up supporting AHI eventually, and I'd hope someone could come along and find a way to make it work with OctaMED. If not then maybe the next Digibooster will support it?

[Iggy]

OK...but MP3 decoding can be done with one dirt cheap chip.
Why the programmable logic?
And, frankly, these days I'm more interested in FLAC.

[Oldsmobile_Mike]

I've used S/PDIF to connect the output on my PC's into the input on my receivers for years.  Love it, great addition to your card!

[amigakit]

The chip on board does FLAC too

Here's the information on the sound card:


http://www.a-eon.com/18-10-2013-2.pdf

[XDelusion]

OK...but MP3 decoding can be done with one dirt cheap chip.
Why the programmable logic?
And, frankly, these days I'm more interested in FLAC.

I'm with you on the FLAC, though I know I won't want Gigs of MP3's on my Amiga's hard drive, so the few I'll have I'll just convert from FLAC, but yes, FLAC playback on Amiga would be awesome!