68040 40mhz and Mp3 files

[hbarcellos]

Hi Folks,

    An A1200 with 68040 40mhz accelerator should be enough to play 160k mp3 files?

Regards,

[TiredOLife]

I played 128k mp3 files easily enough with a Blizzard 1230 50mhz, so I should think so.
 

[hbarcellos]

What software do you use?

[pyrre]

I use AMIamp and AHI. on my BPPC 040 25, and it works like a charm...

[orange]

@TiredOLife
really? on Amiga output? in stereo?
I have heard that 040 is minimum. I had troubles with 060 and toccata, but its probably settings.

BTW, how good is it without special sound card, (since Amiga out is not 16bit)?

[TiredOLife]

Songplayer I found seemed to need less grunt than other mp3 players.

Can't remember how good the sound quality was without a sound card.

User to connect the audio out ports to a Technics midi.
Don't remember the quality being particulary bad.

I was using a Blizzard 1260 50mhz by the time I started using a Terratec sound card.

[alenppc]

hbarcellos wrote:
Hi Folks,

    An A1200 with 68040 40mhz accelerator should be enough to play 160k mp3 files?

Regards,

You can do it through Songplayer but you have to severely reduce the quality through AHI... I think you have to set it to mono with 11khz sampling or something like that.

[jj]

You will want to set whichever miggy mp3 player allows you to, to buffer the whole song in ram before playing.  This will ensure a much better playback

[Piru]

@pyrre

I use AMIamp and AHI. on my BPPC 040 25, and it works like a charm...

And you're using the PPC decoder, not m68k. 040@25 can't decode high bitrate mp3s with acceptable quality.

[pyrre]

@ Piru

oooh :roll:

That might be...

AHI gave me options of 14BIT setting. and the sound quality of the original Amiga sound output was AMAZING...

[Daedalus]

TiredOLife wrote:
Songplayer I found seemed to need less grunt than other mp3 players.

Can't remember how good the sound quality was without a sound card.

User to connect the audio out ports to a Technics midi.
Don't remember the quality being particulary bad.

I was using a Blizzard 1260 50mhz by the time I started using a Terratec sound card.

Songplayer is probably the best on lower powered CPUs, but only the older assembler-coded versions. More recent versions were rewritten in C for portability reasons, and as a result are far from satisfactory, even on my 060...

As far as sound output goes, 14 bit Paula isn't actually all that bad, very acceptable through an amp and speakers, but your problem is going to be having to cut the bitrate to successfully decode the audio - that will have a much greater impact on sound quality than the 14 bit sound will.

[kzin]

I used to use mpega from the command line, I had DiskMaster set to start the mp3 playing when I double clicked the song I wanted, mpega has lots of options to allow you to tweak the quality etc. back then I had a 25mhz 040 over clocked to 33MHz, it also has some CPU & FPU specific versions. and you dont have all that GUI over head.

[Daedalus]

The integer version of mpega.library for any specific processor is actually faster than the FPU version - the only reason to use the FPU version is for increased accuracy in your sound reproduction - I'd say only useful for non-realtime decoding, e.g. converting to CDDA or loading into an editor.

[Rob]

Which version of mpega.library you have installed can make a lot of difference mp3 playback.

It seems that a new version was released last year and gives a 10% increase in speed.

Link

[orange]

I'd recommend trying FLAC (if you can), it should use far less CPU (anyone tried it?), and it gives same quality as audioCD. yes, it requires lots of space, but huge HDDs are so cheap.