Testing with the new binaries on RPi that @lissyx provided I am having accuracy issues. I am testing with the following:
Binaries
Sample model
2830-3980-0043.wav file which can be found here
I didn’t try the exact same files on x86 Ubuntu but using the same audio file with those model files gives accurate results.
Wait, I did not noticed you were still using the output_graph.pb from TaskCluster ; this is an overfitted model exclusively dedicated to test, it has no purpose and it is actually expected to perform bad on anything different than LDC93S1 
Is there a set of files that is supposed to work on the Pi then? Shall I wait for the next release?
But these are the files I had the error with. Did you update them in the meantime?
The error were related to the binaries published, not the model which should be fine: output_graph.pb.
@fotiDim Can you check that, please ? There may be multiple reasons for bad results, but as long as you use our model and samples you should get good results.
@lissyx I am fairly sure that are exactly the files that I tried on the first place when you provided the working binary. But just to double check I will give it another go within the weekend so please bear with me until then.
@fotiDim I just re-tested, and I get the same result on my RPi3 and on my laptop on your same sample:
On my laptop:
alex@portable-alex:~/tmp/deepspeech$ ./deepspeech models/output_graph.pb audio/2830-3980-0043.wav models/alphabet.txt -t
2017-12-20 12:43:52.266225: I tensorflow/core/platform/cpu_feature_guard.cc:137] Your CPU supports instructions that this TensorFlow binary was not compiled to use: AVX2 FMA
experience proves les
cpu_time_overall=8.36112 cpu_time_mfcc=0.00293 cpu_time_infer=8.35819
RPi3:
pi@raspberrypi:~/models-release $ ~/native_client_arm/deepspeech models/output_graph.pb audio/2830-3980-0043.wav models/alphabet.txt -t
experience proves les
cpu_time_overall=82.25488 cpu_time_mfcc=0.02952 cpu_time_infer=82.22536
@lissyx sorry for the delay. Life stroke in the meantime. So, there is apparently a difference with our setups.
pi@raspberrypi:~/DeepSpeech/native_client_2 $ ./deepspeech ../models/output_graph.pb ../audio/2830-3980-0043.wav ../models/alphabet.txt -t
Killed
Also you are getting experience proves les. On my PC I was getting experience proves this which happens to be the right text. Not sure why you are getting inaccuracy.
Let me know if I can run another test or trace some logs somewhere.
Don’t feel sorry for the delay :/. But as you can see in my post above, I don’t have any problem on RPi3, so I don’t know what is wrong on your side. Can you ensure that:
Do you use Raspbian or Raspbian Lite? Is it possible to upload your image somewhere so I can give it a try?
697M free? That seems not that much. Check your PSU, even if it’s “specially made for RPi3”, I got funny behaviors with some poor one.
It’s Raspbian Jessie, but it should not have an impact:
pi@raspberrypi:~ $ lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 8.0 (jessie)
Release: 8.0
Codename: jessie
You latest output, with “Killed” would suggest memory issue?
FTR:
pi@raspberrypi:~ $ cat /proc/meminfo
MemTotal: 994232 kB
MemFree: 377192 kB
MemAvailable: 904356 kB
Buffers: 68536 kB
Cached: 505380 kB
SwapCached: 1160 kB
Active: 287996 kB
Inactive: 291256 kB
Active(anon): 3112 kB
Inactive(anon): 12696 kB
Active(file): 284884 kB
Inactive(file): 278560 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 102396 kB
SwapFree: 89380 kB
Dirty: 24 kB
Writeback: 0 kB
AnonPages: 4696 kB
Mapped: 11040 kB
Shmem: 10472 kB
Slab: 27556 kB
SReclaimable: 17548 kB
SUnreclaim: 10008 kB
KernelStack: 1000 kB
PageTables: 604 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 599512 kB
Committed_AS: 76464 kB
VmallocTotal: 1064960 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
CmaTotal: 8192 kB
CmaFree: 6796 kB
pi@raspberrypi:~ $