hss_song4.mp3
(HSS) The Musical Propeller. (Hydra Sound System)
Propeller - (HSS) The Musical Propeller. (Hydra Sound System
-
JimmyAndersson
- Inlägg: 26586
- Blev medlem: 6 augusti 2005, 21:23:33
- Ort: Oskarshamn (En bit utanför)
- Kontakt:
Kanske 
"You wont be able to play mp3s "right out of the box". Honestly you wont be able to do pretty much anything with the propeller right out of the box in the most literal sense. The chip was designed to provide the most generic hardware platform possible, so that IC real estate isn't wasted on a feature you may use 1 in every 50 projects. But that said, software objects have been created to do specialized tasks (TV generation etc), and more are on the way. That you can load into the propeller to do this or that. There isn't a mp3 decoder object yet, there is no specific plans for one being made. But it would be possible by a programmer of sufficient skill to create one. I have thought about a mp3 decode object, but thats as far as its gone, thinking. It is way down the list of things I want to try with the propeller."
Can i play mp3 with propeller demo board???
"You wont be able to play mp3s "right out of the box". Honestly you wont be able to do pretty much anything with the propeller right out of the box in the most literal sense. The chip was designed to provide the most generic hardware platform possible, so that IC real estate isn't wasted on a feature you may use 1 in every 50 projects. But that said, software objects have been created to do specialized tasks (TV generation etc), and more are on the way. That you can load into the propeller to do this or that. There isn't a mp3 decoder object yet, there is no specific plans for one being made. But it would be possible by a programmer of sufficient skill to create one. I have thought about a mp3 decode object, but thats as far as its gone, thinking. It is way down the list of things I want to try with the propeller."
Can i play mp3 with propeller demo board???
Jag tror inte att det är möjligt... inte utan hårdvare multiplikator
exempel
ARM7TDMI klara avkoda MP3 vid 30Mhz, antal multiplikationer är mer 20% av tiden
delvis åt går det ca 6M multiplikationer i sekunden...
Om vi antar att multiplikationer är av 16*16 = 32bitar, så borde varje multiplikation ta (vid optemalt fall) 3*16cyckler (test av aktuel bit, addition,shifting på samtiliga 16bitar)= 48 cyckler...
6M*48 = 288Mips för enbart för multiplikator...
vilket är ganska långt ifrån 160Mips...
exempel
ARM7TDMI klara avkoda MP3 vid 30Mhz, antal multiplikationer är mer 20% av tiden
delvis åt går det ca 6M multiplikationer i sekunden...
Om vi antar att multiplikationer är av 16*16 = 32bitar, så borde varje multiplikation ta (vid optemalt fall) 3*16cyckler (test av aktuel bit, addition,shifting på samtiliga 16bitar)= 48 cyckler...
6M*48 = 288Mips för enbart för multiplikator...
vilket är ganska långt ifrån 160Mips...
