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Type: Posts; User: iammb

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  1. Replies
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    I changed the loop in my code and used one you...

    I changed the loop in my code and used one you mentioned above. 11sec gap doesn't occur at the start of recording, it occur when some 5K-10k files are recorded on sdcard. I logged the results and you...
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    Do you mean its just time sync issue?, because i...

    Do you mean its just time sync issue?, because i did perform continuity check with audio(Example: playing 1-1000 count in a loop on music player and recording on device). What i observed is, files...
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    This is my code for creating 10 sec wav file...

    This is my code for creating 10 sec wav file continuously, new directory is created every day. When i compare timestamp of files, i can see gaps between 2 wav files as 9sec and 11sec when i have set...
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    Hi, Can anyone tell me if projects like...

    Hi,
    Can anyone tell me if projects like microsoud recorder and batdetector have similar issue, while recording file continuously?
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    UART error rate at higher baud rate

    Hi,
    I am using Serial1 at higher baud rates(921600 and 3000000), i want to know how reliable is Serial1.read() at lower core clock. Usually i set teensy3.5/3.6 core clock to 120Mhz but if i set core...
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    I tried creating new directory every hour and...

    I tried creating new directory every hour and also tried with creating directory every day, but it's still having time gaps.
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    Yes,i format SD cards before using them. I have...

    Yes,i format SD cards before using them. I have tried with both FAT32 and exfat, same issue with both. When i keep device recording for long duration's, i see these 11 sec time gaps (10sec wavfile)...
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    SD.open taking long time

    Hi,
    I am trying to make a continuous recording device using Teensy3.5/3.6 and SPH0645 I2S mems microphone from adafruit. As per suggestions i got from this forum, i referred micro sound recorder and...
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    Hi, As advised by WMXZ, i referred...

    Hi,
    As advised by WMXZ, i referred microSoundRecorder and bat detector and included sdfs library in my project. Sdfs performance if way better than SD.h. Earlier i was having issue of timestamp gap...
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    For transmission of wav file via gsm, first i...

    For transmission of wav file via gsm, first i have to write file to EFS(Encrypted file system) of gsm and then issue AT command to upload file. If i use low baud rate eg:115200, the data transfer...
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    Biggest incoming string coming from GSM is around...

    Biggest incoming string coming from GSM is around 50-60 characters. I am using Serial1 at 921600 baud rate and core clock is set to 120Mhz. Code below is part of working code which records wav file...
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    I want the device to record continuously and...

    I want the device to record continuously and whatever time is left between waiting for queue to fill with audio data and writing samples to sd card, i want to send AT commands over UART.
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    Audio transmitter

    Hi,
    I am working on a project where i want to upload audio files(.wav) to server using GSM. Device should record 10 sec audio files continuously but when controller is free(between writing samples...
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    I read this post :...

    I read this post : https://forum.pjrc.com/threads/34327-Audio-library-and-SdFat-Library . If sdfat is faster than sd library, how to use it with audio library?
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    I searched on the forum and i came to know that...

    I searched on the forum and i came to know that SD fat library doesn't work with Audio library. So is there any other way to minimize these delay?
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    SD taking more time to write samples

    Hi,

    I am making a audio recorder with teensy3.5 and 3.6 using SPH0645 mems i2s mic from adafruit. I want the device to record 10sec audio continuously till the battery last(I am using 3.7v 2000mah...
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