Al,
My understanding ii that Lyra is currenlty optimised for arm64 systems.
Like LPCNet, it may still need a port of several key functions to some
sort of x86 SIMD instruction set like AVX.
- David
On 9/4/21 8:34 pm, Al Beard via Freetel-codec2 wrote:
Hi all,
I've loaded this "bazel" build system on Ubuntu 20.04 LTS on a Pentium
E5300 box (no AVX/AVX2).
apt install bazel-4.0.0; ln -s /usr/bin/bazel-4.0.0 /usr/bin/bazel
bazel build -c opt :encoder_main
bazel build -c opt :decoder_main
I note the audio samplerate is 16000 whereas Codec2 and the M17
project go with 8000.
Running their test script:
:
*export PATH=$PATH:/data/downloads/yy4418/lyra/bazel-bin*
*bazel-bin/encoder_main --model_path=wavegru --output_dir=$HOME/temp
--input_path=testdata/16khz_sample_000001.wav*
*bazel-bin/decoder_main --model_path=wavegru --output_dir=$HOME/temp/
--encoded_path=$HOME/temp/16khz_sample_000001.lyra*
*
*
*output*
I20210409 20:36:27.839759 178277 decoder_main_lib.cc:97] Elapsed
seconds : 9
I20210409 20:36:27.839819 178277 decoder_main_lib.cc:98] Samples per
second : 12246.8
*time aplay $HOME/temp/16khz_sample_000001_decoded.wav*
*Playing WAVE '/root/temp/16khz_sample_000001_decoded.wav' : Signed 16
bit Little Endian, Rate 16000 Hz, Mono*
*
*
*real0m8.481s*
*user0m0.195s*
*sys0m0.071s*
============ So from an 8.5 sec test file, when decoded takes:
*real0m11.183s*
*user0m11.050s*
*sys0m0.105s*
W20210409 20:43:22.203222 178355 kernels_generic.h:241] SumVectors:
using generic kernel!
I20210409 20:43:32.897627 178355 decoder_main_lib.cc:97] Elapsed
seconds : 10
I20210409 20:43:32.897687 178355 decoder_main_lib.cc:98] Samples per
second : 11307.7
====== Conclusion =====
My Pentium E5300 2.6 GHz is not powerful enough!
The encode phase is quick, super quick:
time encoder_main --model_path=wavegru --output_dir=$HOME/temp
--input_path=testdata/16khz_sample_000001.wav
WARNING: Logging before InitGoogleLogging() is written to STDERR
I20210409 20:57:47.317165 178410 encoder_main_lib.cc:94] Elapsed
seconds : 0
I20210409 20:57:47.317334 178410 encoder_main_lib.cc:95] Samples per
second : 5.12104e+06
real0m0.049s
user0m0.034s
sys0m0.012s
Alan VK2ZIW
*On Thu, 8 Apr 2021 14:34:12 +0800, Random wrote*
> Thanks a lot, David.
>
> Could you please squeeze Lyra to 2400bps ? Such that we can compare
its performance with that of LPCNet.
>
> Best Regards.
>
> ------------------ ÔʼÓʼþ ------------------
>
> *·¢¼þÈË:* "freetel-codec2" <da...@rowetel.com>;
> *·¢ËÍʱ¼ä:* 2021Äê4ÔÂ7ÈÕ(ÐÇÆÚÈý) ÏÂÎç4:25
> *ÊÕ¼þÈË:* "freetel-codec2"<freetel-codec2@lists.sourceforge.net>;
>
> *Ö÷Ìâ:* Re: [Freetel-codec2] Codec2 vs Lyra?
>
> Hmm, I wonder how quickly I can get this into a FreeDV mode :-)
>
> 3000 bit/s is a bit high for HF, but nice for VHF. Might be cool for
> the m17 project.
>
> On 7/4/21 5:18 pm, David Rowe wrote:
> > Further to this, I've just bee told Google has open source Lyra :-)
> >
> >
https://opensource.googleblog.com/2021/04/lyra-enabling-voice-calls-for-next-billion-users.html
> >
> >
> > - David
> >
> >
> > _______________________________________________
> > Freetel-codec2 mailing list
> > Freetel-codec2@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/freetel-codec2
>
> _______________________________________________
> Freetel-codec2 mailing list
> Freetel-codec2@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/freetel-codec2
---------------------------------------------------
Alan VK2ZIW
Before the Big Bang, God, Sela.
OpenWebMail 2.53, nothing in the cloud.
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