audio

问题 I need to build a software that does audio recognition from a small audio sample (A) inside other audio samples (B), and output how many times A appears inside the audio from B (if there is a match). What I have: A database with hundreds of audios Input: New audio Expected Output: A boolean if the input matches a sample from the database, and how many times appeared the input inside the matched audio (from the db). Any code, open source project, guides, books, videos, tutorial, etc... is

问题 I need to build a software that does audio recognition from a small audio sample (A) inside other audio samples (B), and output how many times A appears inside the audio from B (if there is a match). What I have: A database with hundreds of audios Input: New audio Expected Output: A boolean if the input matches a sample from the database, and how many times appeared the input inside the matched audio (from the db). Any code, open source project, guides, books, videos, tutorial, etc... is

问题 I am currently using the MediaRecorder API to record audio inside an application. Is there a way to record from multiple input devices, say, two microphones? I can get a list of devices using mediaDevices.enumerateDevices() , as demonstrated here. Ideally, if possible, I would like to select two or more devices to be recorded. Is this possible? 回答1: this function will merge your tracks into one: function mix(audioContext, streams) { const dest = audioContext.createMediaStreamDestination();

问题 I'm trying to create a program to talk back at once. I can't seem to get it to work. Some websites say use numpy arrays but I don't know how. import pyaudio import wave import time import multiprocessing as mp import pyaudio import numpy as np import sounddevice as sd fs = 44100 FORMAT = pyaudio.paInt16 CHANNELS = 2 RATE = 44100 CHUNK = 1024 audio = pyaudio.PyAudio() RECORD_SECONDS = 5 stream = audio.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK)

问题 I want use a bluetooth headset as audio source for recording a video. I can use arecord -D bluetooth -f s16_le -c1 -r8000 command and pipe audio to ffmpeg. But this cause sync problems in audio and video. so i want to capture audio without arecord. How can i define bluetooth device as audio source in ffmpeg command? My asoundrc file: pcm.bluetooth { type bluetooth profile "auto" } ctl.bluetooth { type bluetooth } 回答1: After some digging in the ffmpeg docs, i managed to record sound via

问题 I have a list of .wav files my_list : library(seewave) library(tuneR) data(tico) audio <- tico freq <- 22050 breaks <- c(0,0.2,0.4,0.6,0.8) index <- 1:(length(breaks)-1) my_list<-lapply(index, function(i) audio[(breaks[i]*freq):(breaks[i+1]*freq)]) I want too combine all these files into 1 .wav file, but this doesn't work: index <- 1:length(breaks) allf =lapply(index, function(i) bind(my_list[[i]])) And this is too tedious to do since I have hundreds of multiple files to create: allf =bind(my

问题 I have a list of .wav files my_list : library(seewave) library(tuneR) data(tico) audio <- tico freq <- 22050 breaks <- c(0,0.2,0.4,0.6,0.8) index <- 1:(length(breaks)-1) my_list<-lapply(index, function(i) audio[(breaks[i]*freq):(breaks[i+1]*freq)]) I want too combine all these files into 1 .wav file, but this doesn't work: index <- 1:length(breaks) allf =lapply(index, function(i) bind(my_list[[i]])) And this is too tedious to do since I have hundreds of multiple files to create: allf =bind(my

问题 I'm developing a sound JavaScript library. I can play sound with below code. var soundPlayer = null; function playSound(){ soundPlayer = new Audio(soundName).play(); } How can I stop and pause this audio? When I try like this: soundPlayer.pause(); Or soundPlayer.stop(); But I get this error: Uncaught TypeError: soundPlayer.stop is not a function How can I do that? 回答1: If you change that: soundPlayer = new Audio(soundName).play(); To that: soundPlayer = new Audio(soundName); soundPlayer.play(

问题 I'm developing a sound JavaScript library. I can play sound with below code. var soundPlayer = null; function playSound(){ soundPlayer = new Audio(soundName).play(); } How can I stop and pause this audio? When I try like this: soundPlayer.pause(); Or soundPlayer.stop(); But I get this error: Uncaught TypeError: soundPlayer.stop is not a function How can I do that? 回答1: If you change that: soundPlayer = new Audio(soundName).play(); To that: soundPlayer = new Audio(soundName); soundPlayer.play(

问题 I'm developing a sound JavaScript library. I can play sound with below code. var soundPlayer = null; function playSound(){ soundPlayer = new Audio(soundName).play(); } How can I stop and pause this audio? When I try like this: soundPlayer.pause(); Or soundPlayer.stop(); But I get this error: Uncaught TypeError: soundPlayer.stop is not a function How can I do that? 回答1: If you change that: soundPlayer = new Audio(soundName).play(); To that: soundPlayer = new Audio(soundName); soundPlayer.play(