I am currently trying to make the following code work, however when trying to get access to the device with portaudio the function I use a linux computer, and the cards use ALSA. And both code use the same version of portaudio The following code which is pa_dev.c is provided with portaudio. This code has ..
Category : alsa
I am new to alsa, pulseAudio, needed help with this issue. This is the truncated output of pacmd command on my system pacmd list-sources: name: <alsa_input.pci-0000_00_1f.3.analog-stereo> properties: alsa.resolution_bits = "16" device.profile.name = "analog-stereo" device.profile.description = "Analog Stereo" device.description = "Built-in Audio Analog Stereo" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" I want to fetch the field: ..
I am using a USB sound card with 16 microphones on my Raspberry Pi (the device is the UMA 16). Currently, I am collecting all 16 channels data and using up to 8 of them by separating their contents programmatically for an application that needs real time audio input, according to a configuration file which ..
I have a buffer of length 1024 coming over the network filled with single channel audio data at 48000Hz in S32LE format. I’m able to play this back using SDL2 however I need change this to use the ALSA API. I’ve followed countless tutorials but all I’m getting is static. This is the setup code ..
I am trying to make a call using PJSUA2, play a wav file to the callee, and callee should record this file to wav. I created two programs for that (caller and callee). And when caller starts playing wav file into AudioMedia object, console of callee program just spams out "alsa.c pb_thread_func: underrun!" and nothing ..
I am writing a C++ project in which I want to get frequences from surrandings. It is based on Raspberry Pi. I run some code using Alsa to record sound to .pcm. I am stuck in getting data which I have to put in FFT function. My idea was to collect data: `snd_pcm_readi (capture_handle, buffer, ..
Here is code: if (!BASS_Init(-1, 44100, 0, NULL, NULL)) { return 0; } DWORD chan = BASS_StreamCreateFile(FALSE, argv[1] , 0, 0, BASS_SAMPLE_LOOP); BASS_ChannelPlay(chan, FALSE); After compiling and running program i get following error: ALSA lib pcm_dmix.c:1075:(snd_pcm_dmix_open) unable to open slave How can i fix it? Source: Windows Que..
I want to play arbitrary sounds programatically using aplay on linux. Besides playing I want to use the interactive mode to pause the playback which can be achived by pressing space key when running aplay from a terminal. I thougth this can be achived by sending ‘ ‘ througth the pipe to the process which ..
Depending on what I do I either get "No such audio device" if I leave determining my audio device up to SDL2 or I get Failed loading libasound.a: /home/aypahyo/.conan/data/libalsa/1.2.4///package/d48130e0dd76369b1338deb3b2372c5a649f9f2d/lib/libasound.a: invalid ELF header when I set SDL_AUDIODRIVER=alsa. (The error message is actually cut off, I added an r at the end). Here is an implementation that ..
I’m trying to record microphone with alsa api on linux, but result is strange sounds like freezed glitchy robot. Recorded pcm data sended by UDP protocol to pcm player endpoint. char* device = "default"; unsigned int rate = 44100; unsigned int channels = 2; snd_pcm_uframes_t frames{}; snd_pcm_t* capture_handle{}; snd_pcm_hw_params_t* hw_params{}; if (snd_pcm_open(&capture_handle, device, SND_PCM_STREAM_CAPTURE, 0) ..
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