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for my sound application, I want to get the amplitude, or dB, of the PDM samples.
Are there any existing function implemented? If not, how can I code it on my own?
I already read about PDM. Is it ... (more)
As I don't know much about audio,I have trouble with the gain of the pdm module in nrf52832.Now I have used MP45DT02 as the digital microphone,but I just can't understand the gain about the pdm ... (more)
Dear Nordic employee:
1、 what do I have?
I have two thingy52 develop kit（nrf52832）
2、what is my purpose?
I want to develop a dome that sounds can transfer between two thingy52，like a inter phone
3、what is ... (more)
For my audio application, I need to convert pcm out from pdm module(nrf52832) to an audio format (mp3,wav) continuously. Is there any method or procedure for this??...or any sample example?? please help... Actually, MIC is outing pdm ... (more)
Dear Nordic team,
I have a running NRF52 with a firmware based on the freeRTOS demo. To this demo I added the PDM Support Module and the TWI Module. As soon as both sensors are available, I get very random ... (more)
I found your PDM Working Example. However I wonder what to make of the data I get.
What is the CONFIG_PDM_BUFFER_SIZE_SAMPLES for? Do I get 16Bit Bit-Schemes from which I must assemble my PCM Data or are there lets ... (more)
hi, Is there any working PDM example for nRF52832? or can anyone give a sample initialization code for PDM with easyDMA using the inbuilt nrf_pdm_drv functions?
i use nrf52_DK to debug PDM with a digital MIC, and select the P0.09 for the PDM clk, but i have not see any clock signal output, is it right? and i also haven't see the convet date, what's wrong?
I am connecting the AKU242 straight to our microprocessor. It is a PDM interface so it has a SELECT, DATA, CLOCK, VDD and 5 GND signals. On the datasheet, there are two identical PDM microphones with one SELECT connected ... (more)
What is the most energy efficient microphone input method, PCM via I2S or PDM. Does the SoC have a special HW handling of the PDM format for converting to PCM? Does the filtering of the 1 bit conversion compete with ... (more)
I'm starting a new design on nRF52 and I need to connect a microphone on it. Reading the datasheets and questions here, I found there's 3 solutions for the type of microphone and interface to nRF52 :
As I know, nRF52 support PDM mic. So, I'll make recording sound with nRF52. But, I do not find PDM example on SDK 11.
Please notice me, where is the PDM mic example.
I would like to know how can I use nrf52832 preview kit for audio application, i.e. I would like to use PDM interface of nrf52832, please guide me on how can i do that.
yesterday i ordered th nrf52 Development Kit an just had a look in the Errata http://infocenter.nordicsemi.com/inde... So if i get my Development Board, will all this stuff marked up in Errata not working to me ... (more)