Support and General Use > Recording

is it possible to play with yourself?

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quincy:
with rockbox (specifically for iaudio x5) is it possible to record over a file and hear it being played at the same time?

AlexP:
No, not currently.  Maybe someone else can say if the hardware allows this.

I wonder how many people will look at this topic because of the somewhat suggestive title!

gnu:
Yeah, I love the title ;)
AFAIK the X5's CPU (coldfire) isn't fast enough to play and record at the same time. It might however be possible on Portaplayer targets and the Gigabeat.

Multiplex:
There was a discussion about using (an iRiver at the time) as a Real-Time DSP effects device - the relevance being that it would need to be driving input and output simultaneously.

try some more searches - I'm sure someone (who should know) said it would be technically possible - you might have to do it in a CPU efficient format though, and I'm wondering how you'd synchronise the played music with the output from the ACD to do the mix.

jhMikeS:
/me wonders why he has to repeat this often: full duplex sound already works on coldfire (H1x0/3x0, X5) and effects plugins have been implemented already (but are not part of the distribution yet) :D

You are listening to the data received from the ADC being looped back to the DAC. The monitoring is not analog so it is replaying what's recorded but not what's encoded. Unless you're using the MP3 codec it will make no difference to decode and immediately play back what's compressed since you'll just get the same pcm back that already gets looped out.

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