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STM32 Microphone Array

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  • Microphone array support in Windows. Info on performance and compatible hardware?

    Microphone array support in Windows. Info on performance and compatible hardware?January 29

    It is officially claimed by Microsoft (Audio Device Technologies for Windows), that Windows Vista has an integrated system-level support of microphone arrays for improved sound capturing by isolating a sound source in target direction and rejecting a

  • Want a USB mini-microphone array. Is it possible?August 25

    I have been learning a lot about adaptive beam-forming, and have been mucking around with various sims in MATLAB, etc. But what better way to understand something - truly understand it - than to play with the entire system? To this end, I would like

  • Why need more aperatures in microphone array?August 18

    I am tring to achieve delay sum beamforming with microphone array, for that I bought playstation eye camera which has 4 microphones in it. For locationg the angle of the sound I need to find exact time delay which gives the max output. Now I take the

  • Microphone doesn't work for any program except for the control panelSeptember 1

    I'm using both a line in mic, and a built in microphone array with my laptop. When I go to Control panel > Hardware and Sound > Manage audio devices, I see the bars go up and down in the recording tab, but no programs that I use can actually tell th

  • How do I disable microphone volume auto-adjusting?

    How do I disable microphone volume auto-adjusting?November 28

    My coworkers started yelling at me today because apparently I started screaming in their ears during a Google hangout. And sure enough, when I go to the Microphone settings dialog, I can see the level being auto-adjusted constantly; sometimes way too

  • What makes one microphone better than another, and how do I make my own?

    What makes one microphone better than another, and how do I make my own?August 16

    I am curious about microphones and have a few questions. What is the key component in them which makes one better than another? What does it take to build a high quality microphone on my own? I'm looking to purchase a good microphone, and was looking

  • Microphone time delay estimationJuly 27

    I'm trying to estimate the direction of arrival of sound using a microphone array. This requires me to find the delay of the sound signal upon arriving the different microphones. For convenience, I was hoping to use 4 USB mini microphones and connect

  • I2S interface ideas for multiple MEMS microphones

    I2S interface ideas for multiple MEMS microphonesOctober 26

    I plan on forming a microphone array with 4 MEMS microphones and doing the signal processing(beamforming) in matlab/C on my PC. MEMS mics i use have Digital I²S interface with high precision 24 bit data (ADMP441). I have them placed on the PCB so the

  • Select microphone device programmatically to virtual audio cable in Windows 7January 28

    I would like to programmatically select between two microphones as the input device/app that is the source for audio to the virtual audio cable (VAC). I have two different microphones, mic A and mic B. Mic A is a specific use microphone. Mic B is a g

  • Audio Recording iPhone app using separate microphonesJuly 17

    I want to make a 2-element microphone array using my iPhone. I'm looking for an audio recording app (like Voice Memos) that can record through both microphones of the iPhone. Does anybody know an application for this purpose?

  • Win10 + Kinect 2 as microphoneNovember 28

    Trying to use my Kinect 2 (aka XBox One Kinect) with Windows 10 PC as a living room microphone. I have it hooked up using the official PC adapter, and it works pretty good -- when I have the Windows Speech app open (sapisvr.exe -SpeechUX). However, i

  • STM32 read PDM data with GPIOJanuary 23

    I want to build a microphone array with MP45DT02, which outputs PDM signal. It seems that SPI/I2S is usually used to read PDM data, but my MCU (STM32F407ZGT6) has only 2 I2S's and can only support 4 microphones, which may be not enough for an array.

  • Output Audio via HDMI and Analog Out SimultaneouslyOctober 8

    I need to output the system audio from a desktop to both the HDMI output (sending to the display that functions as the room speakers) and via the analog stereo output (to feed the reference input on a microphone array for Skype). The only solution I'

  • Windows XP - Simultaneous audio HDMI and Onboard output October 8

    I need to output the system audio from a desktop to both the HDMI output (sending to the display that functions as the room speakers) and via the analog stereo output (to feed the reference input on a microphone array for Skype). The only solution I'

  • How to switch off my internal mic?

    How to switch off my internal mic?October 13

    I have bought a Sonicgear microphone. It gets recognized by my computer, but when I try to record using OneNote, sounds from my internal mic are only recorded. I have an HP Pavilion Laptop and it comes with an IDT audio driver. I muted the Microphone

  • ADC input to raspberry pi - I2C vs I2SNovember 25

    I'm trying to create a microphone array and take readings into a raspberry pi. I'm having an 8 bit ADC connected to the pi via I2C (SCL and SDA pins). I'm able to read samples (0-255) into my pi using this. What I actually want to do is read input fr

  • Non-line-of-sight distance approximation between trasmitter and receiver

    Non-line-of-sight distance approximation between trasmitter and receiverMarch 27

    I have one stationary object in a 2d plane (no z-axis). Let's say this stationary sphere is in the middle of a rectangular plane. I have another object in the same rectangular plane that is in motion all the time. The second object moves around the f

  • What are my options for detecting the position of a small moving metal object?

    What are my options for detecting the position of a small moving metal object?April 2

    This is an airgun pellet trap: I fire small metal pellets at it (4.5mm = .177" in diameter) at up to 120 m/s = 390 fps. What are my options for detecting the X / Y position at which it enters the target? Does it make it easier if I only need to know

  • How to make Windows 8.1 recognise/use the inline mic of headphones connected to a dual input

    How to make Windows 8.1 recognise/use the inline mic of headphones connected to a dual inputJuly 16

    I've got a pair of headphones with an inline microphone in the cable, connected into a socket that is described in the "other connections" section of the manufacturer's spec list as: Dual Microphone, Stereo Speakers, DC Jack, 1 Headset (Audio) I

  • IDT 92HD93 driver for Windows 10November 17

    I have a 2-year old Dell Latitude E6330 with an IDT 92HD93 sound card. Unfortunately there don't seem to be any Windows 10 drivers for that card (I've looked almost everywhere), and the Windows 8.1 drivers don't work properly (microphone doesn't reco

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