Finding the length of an mp3 file
You can use mutagen to get the length of the song (see the tutorial): from mutagen.mp3 import MP3 audio = MP3(“example.mp3”) print(audio.info.length)
mp3
Android – Playing mp3 from byte[]
OK, thanks to all of you but I needed to play mp3 from byte[] as I get that from .NET webservice (don’t wish to store dynamically generated mp3s on server). In the end – there are number of “gotchas” to play simple mp3… here is code for anyone who needs it: private MediaPlayer mediaPlayer = … Read more
How to encode a WAV to a mp3 on a Android device
Pure Java Look into Tritonus’s clean room implementation of javasound which offers an MP3 encoder plugin here: http://www.tritonus.org/plugins.html Secondly, I would suggest looking into jzoom’s libraries JLayer or JLayerME: http://www.javazoom.net/javalayer/javalayer.html (this may only be decode, not sure) If those doesn’t suit your need you can look at this article from 2000 about adding MP3 capabilities … Read more
Right place for putting mp3 files in an android project
The best place to put such .mp3 or any other files would be in the assets folder. These files once stored will become a part of your android app itself and can be read easily. This tutorial describes it well. AssetFileDescriptor afd = getAssets().openFd(“AudioFile.mp3”); MediaPlayer player = new MediaPlayer(); player.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength()); player.prepare(); player.start(); Alternatively you can … Read more
Any good recommendations for MP3/Sound libraries for java? [closed]
JLayer should do everything you need. It’s not dead, it’s just stable. The author finished it up quite a long time ago and the MP3 format has not seen much change since. You’ll notice that his MP3SPI codebase is a little more recent. What MP3SPI does, is that translates JLayer’s abilities into JavaSound APIs. Thus … Read more
MAC’s “say” command to MP3 [closed]
I’m not on a Mac right now, so I can’t test, but this page suggests you can do say -f script.txt -o greetings.aiff to load what should be said from script.txt and save the audio output as greetings.aiff. You can then convert it to mp3 using lame with lame -m m greetings.aiff greetings.mp3 Definitely try … Read more
Python library for playing fixed-frequency sound
PyAudiere is a simple cross-platform solution for the problem: >>> import audiere >>> d = audiere.open_device() >>> t = d.create_tone(17000) # 17 KHz >>> t.play() # non-blocking call >>> import time >>> time.sleep(5) >>> t.stop() pyaudiere.org is gone. The site and binary installers for Python 2 (debian, windows) are available via the wayback machine e.g., … Read more
How to convert any mp3 file to .wav 16khz mono 16bit
kdazzle’s solution is almost there – it still output a stereo wav, here is a slightly modified version that generate mono: ffmpeg -i 111.mp3 -acodec pcm_s16le -ac 1 -ar 16000 out.wav also, if this is for pre-processing speech data for sphinx 4 see here: Convert audio files for CMU Sphinx 4 input
How to convert MP3 to WAV in Python
I maintain an open source library, pydub, which can help you out with that. from pydub import AudioSegment sound = AudioSegment.from_mp3(“/path/to/file.mp3”) sound.export(“/output/path/file.wav”, format=”wav”) One caveat: it uses ffmpeg to handle audio format conversions (except for wav files, which python handles natively). note: you probably shouldn’t do this conversion on GAE :/ even if it did … Read more
ExoPlayer AudioTrack Stuttering
I have seen similar behavior couple times and it was related to lowering cpu frequency for power saving. If you have rooted device you can try going to: cd /sys/devices/system/cpu/ And for all cpu’s you see (replace cpuX by cpu0, cpu1 and etc) do: echo 1 > cpuX/online echo performance > cpuX/cpufreq/scaling_governor If this is … Read more