Error when creating AudioRecord

[rompelstilchen2]

hello,

on my phone the Demo application works fine (svn repository)
but on another phone, i get an error

Could not get audio input for record source 6
Error creating AudioRecord instance: initialization check failed.
[ android.media.AudioRecord ] Error code -20 when initializing native AudioRecord object.

after investigation, i checked the code in SpeechRecognizer.java

this is the line causing problem

recorder = new AudioRecord(MediaRecorder.AudioSource.VOICE_RECOGNITION,
(int) config.getFloat("-samprate"),
AudioFormat.CHANNEL_IN_MONO,
AudioFormat.ENCODING_PCM_16BIT,
8192);

if i add

config.setFloat("-samprate", 8000);

to PocketSphinxActivity.java, it works but i get another Filter error

FATAL: "fe_sigproc.c", line 657: Failed to create filterbank, frequency range does not match. Sample rate 8000.000000, FFT size 512, lowerf 5125.000000 < freq -15.625000 > upperf 4218.750000.

so nomatter what i say, it keeps displayn "Withdraw two two two one"

can you enlight me ?

thx

[Nickolay V. Shmyrev]

Please, tell us phone models and OS versions. Thanks.

[rompelstilchen2]

phone is actually a dev board ODROID XU-E
android 4.2.2

[rompelstilchen2]

so i had the same issue with another app and it is definetely a problem that occurs becos of an unsupported sampling rate

[rompelstilchen2]

did you had the opportunity to look at the problem ?

[Nickolay V. Shmyrev]

If hardware doesn't support recording with required sampling rate there is little we can do about that.

[rompelstilchen2]

the AudioRecord is created without any frame rate in the Demo code

(int) config.getFloat("-samprate") will return nothing, so how could this work
what is the default frame rate ?

[rompelstilchen2]

if i remember well the previous versions were using a sample rate of 8000

... not in the current (sf svn) code :

Config config = Decoder.defaultConfig();
config.setString("-dict", joinPath(appDir, "models/lm/cmu07a.dic"));
config.setString("-hmm", joinPath(appDir, "models/hmm/en-us-semi"));
config.setString("-rawlogdir", appDir.getPath());
config.setInt("-maxhmmpf", 10000);
config.setBoolean("-fwdflat", false);
config.setBoolean("-bestpath", false);
config.setFloat("-kws_threshold", 1e-5);
recognizer = new SpeechRecognizer(config);

where SpeechRecognizer uses

(int) config.getFloat("-samprate")

how could this even work ?? i dont get it

[Alexander Solovets]

You sound offensive though you don't even bother to look at the code or debug that piece of code. Config object has many options set implicitly. The default sampling rate should be 16000.

[rompelstilchen2]

i did not mean anything offensive

it works on my other phone and there is no config.getFloat("-samprate") in the code
so i wondered how could this work ... that's all

why be so irritable? i try to write the best english i can, although i am french so sorry if i wrote something that could be interpreted the wrong way

and i did not have much time to go deep in the debugging cos i also try to make other libraries work on the dev platform

[Nickolay V. Shmyrev]

so i wondered how could this work ... that's all

It works as written in the code. Default value 16000 is configured in recognizer and used in AudioRecord.

You can not use 8000 anymore, en-us-semi is 16khz model

[Jaspreet Sahota]

Hello All

Is there a fix for the issue? Please let me know.
Facing exactly same issue on Odroid-XU.

[Nickolay V. Shmyrev]

Get better phone.