Search found 59 matches

by demonoR
Tue 2018-01-09 16:53
Forum: DSP and Audio Software
Topic: Filtering white noise in vs1063a
Replies: 3
Views: 2739

Re: Filtering white noise in vs1063a

Good day Henrik , Thank you, for your answer, yes I am using microphone input. I know that this is normal. 1. You said i can use some low noise op amp, do you have some schematic, or which one you prefer? 2. Is it possible to filter some noise with some plugin for vs1063a? I can filter some noise in...
by demonoR
Sun 2018-01-07 0:01
Forum: DSP and Audio Software
Topic: Filtering white noise in vs1063a
Replies: 3
Views: 2739

Filtering white noise in vs1063a

Good day, Is it possible to filter that white noise which is from mic? Can you check it please for me, i created a little sample. I use this settings: LoadPlugin(venc1063_patch, 1613); WriteRegister16(SCIR_AICTRL0, 16000); WriteRegister16(SCIR_AICTRL1, 0); WriteRegister16(SCIR_AICTRL2, 10 * 0x0400);...
by demonoR
Fri 2017-07-14 8:32
Forum: DSP and Audio Software
Topic: Removing, filtering noise with software
Replies: 0
Views: 3058

Removing, filtering noise with software

Hi there Panu, Pasi,

I have a little problem, I made mistakes in hardware, so I got some noise. Is it possible to filter that noise with software.

I can give the example of noise.

Thank you in advance!
by demonoR
Fri 2016-04-22 13:05
Forum: Microcontroller Software
Topic: VS1053 MIC + SDIO, HOW?
Replies: 8
Views: 1723

Re: VS1053 MIC + SDIO, HOW?

Hello! Are you sure you are actually missing samples? To make sure you should record a source where timing is known, like a one-second "ticking clock" or some known piece of music. Those beats I can see (but not really hear) on your audio sample waveform every 8192 bytes seem to me interference bet...
by demonoR
Wed 2016-04-13 12:52
Forum: Microcontroller Software
Topic: VS1053 MIC + SDIO, HOW?
Replies: 8
Views: 1723

Re: VS1053 MIC + SDIO, HOW?

Thank you, Henrik , I tried to measure reading and writing times. Reading of 1 8 KB block of data from vs1053 takes around 0.228-0.240s with my card. Writing that 8KB block to sd card takes 7-11ms. To sync that block 4-17ms. I think the card is fast enough.. I will try to use different power reg. to...
by demonoR
Tue 2016-04-12 17:03
Forum: Microcontroller Software
Topic: VS1053 MIC + SDIO, HOW?
Replies: 8
Views: 1723

Re: VS1053 MIC + SDIO, HOW?

pasi Thanks for quick reply. I tried, to use big capacitors. Near MicroSD card, and near AVDD. I use this 400mA regulator TPS73633DBVTG4, the average current of device is around 60-80mA. Tried different cards, but did not seen big difference, still some noise, cannot figured why it happens. I only ...
by demonoR
Sat 2016-04-09 13:57
Forum: Microcontroller Software
Topic: VS1053 MIC + SDIO, HOW?
Replies: 8
Views: 1723

Re: VS1053 MIC + SDIO, HOW?

Hi Henrik Thank you for the quick answer, actually I tried to lower SDIO frequency from 25MHz -> 5MHz, but did not helped.. When I am not using MicroSD card, like Live streaming with WiFi module, VS1053 module work fine. I do not understand why I am getting those beats. What should happen with AVDD ...
by demonoR
Thu 2016-04-07 15:32
Forum: Microcontroller Software
Topic: VS1053 MIC + SDIO, HOW?
Replies: 8
Views: 1723

VS1053 MIC + SDIO, HOW?

Good day, I have one problem using VS1053 with microphone and SDIO. I am reading data blocks of 8KB and writing them to MicroSD card. The problem is that to use SDIO I need bigger buffer, at least 8KB. And when I am writing that to MicroSD card I think VS1053 FIFO is overloading and I am getting som...
by demonoR
Sat 2015-08-15 15:11
Forum: System Software
Topic: VS1053/VS1063 reading data using interrupt
Replies: 3
Views: 1780

Re: VS1053/VS1063 reading data using interrupt

Hi Panu, Thank you for quick answer. Yes I write multiple blocks to achieve good speeds. With 32kb buffer write speed is around 8MB/s. My MCU is powerfull has 96kb of memory. Can you give me an example of interrupt handler, how to proper read data to buffer using interrupt. It does not matter for wh...
by demonoR
Fri 2015-08-14 18:33
Forum: System Software
Topic: VS1053/VS1063 reading data using interrupt
Replies: 3
Views: 1780

VS1053/VS1063 reading data using interrupt

Good day all, I use Microcontroller with vs1053/vs1063 (connected to microphone), reading data from mic and put it to MicroSD card. I have one problem here, SDIO interface works better with big data buffers, I use 32768 bytes buffer. VS1053/VS1063 have only 2KB FIFO. So when want to fill full buffer...