Thanks Jason,
i did it quite acceptable for now, i send 3 packets of 1024 bytes for
remote buffering, then i send one packet every 64msec (8000khz 16bit
mono) and the stream seems to be played correctly, always.
many thanks,
Angelo
Jason Daly ha scritto:
> gmail wrote:
>> Hi all,
>>
>> i need a little suggestion on how to implement a streaming sender,
>> reding audio from file.
>> Actually, i used "alut" to load the file in memory, but then, to
>> stream it over the network, the timing seems not perfect.
>>
>
> This is one of those things that's really hard to get just right. The
> simple solution is to buffer a bit on the receiving side before sending
> it to output (this is called jitter buffering). This will introduce
> some latency (delay), but you have to have at least a fraction of a
> second buffered to keep the stream stable. Start with a 0.1-0.2 second
> buffer, and once you get that stable, you can reduce the buffer size to
> bring the latency back down.
>
> Another thing that I've found critical is to use a separate thread to
> read from the network, especially if you're using a UDP connection.
> Otherwise, you're much more likely to lose packets, and hence, lose
> audio. Create a thread that does nothing but read from the network and
> store the data in a queue. Then, your main thread can pick up the
> queued data whenever it gets time.
>
> Expect to do a lot of tweaking on this. It's one of those things you
> can play with for a long time before you're happy with it.
>
> --"J"
>
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