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US8583269B2 - Isochronous audio network software …
https://patents.google.com/patent/US8583269B2/en
Some audio systems communicate uncompressed data across real-time, digital audio networks. These networks are considered isochronal when audio devices on the network respond to a …
How to transfer data to USB isochronous endpoints ...
https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/transfer-data-to-isochronous-endpoints
In full speed, the client driver has one frame to transfer one isochronous packet up to 1,023 bytes. A transfer buffer of 25,575 bytes can hold 25 isochronous packets, each 1,023 bytes long. A total of 25 frames are required for the entire buffer. syntax.
Isochronous Transfers - Keil
https://www.keil.com/pack/doc/mw/USB/html/_u_s_b__isochronous__transfers.html
Isochronous Transfers Isochronous Transfers are used for transmitting real-time information such as audio and video data, and must be sent at a constant rate. USB isochronous data streams are allocated a dedicated portion of USB bandwidth to ensure that data can be delivered at …
CN102572443B - For isochronous audio in image-signal ...
https://patents.google.com/patent/CN102572443B/en
It relates to for isochronous audio and the technology of video data in image-signal processing system.The disclosure provides and utilizes image-signal processing system (22), it …
10 Frequently Asked Questions on LE Isochronous …
https://www.bluetooth.com/blog/10-frequently-asked-questions-on-le-isochronous-channels/
It enables the transmission of multiple, independent, synchronized audio streams between an audio source device, such as a smartphone, and one or more audio sink devices like earbuds or earphones. To support Multi-Stream Audio, Connected Isochronous Group (CIG) and Connected Isochronous Stream (CIS) were introduced.
AN295: USB Audio Class Tutorial - Silicon Labs
https://www.silabs.com/documents/public/application-notes/AN295.pdf
Isochronous data transfers can be used by universal serial bus (USB) devices designed to transfer data to or from a host at a constant rate. Systems streaming audio employ isochronous transfers to transmit audio signals in real-time. Silicon Laboratories microcontrollers’ robust USB peripheral supports isochronous transfers, and each
Synchronous, Asynchronous, Isochronous. What Does it Mean?
http://bucarotechelp.com/networking/basics/88092302.asp
An isochronous data transfer system sends blocks of data asynchronously, in other words the data stream can be transferred at random intervals. Each transmission begins with a start packet. Once the start packet is transmitted, the data must be delivered with a guaranteed bandwidth. Isochronous data transfer is commonly used for where data must be delivered within certain …
Asynchronous and Isochronous - DAC - Digital to Analog ...
https://audiophilestyle.com/forums/topic/31603-asynchronous-and-isochronous/
USB audio always uses isochronous transfers. Asynchronous means the DAC has it's own clock, whereas a synchronous DAC would derive the clock from the USB packet timing. Just about all DACs these days use asynchronous adaptive mode wherein the amount of data sent in each isochronous packet is varied to match, on average, the master clock in the DAC.
Fundamentals of USB Audio - EDN
https://www.edn.com/fundamentals-of-usb-audio/
In USB Audio each transfer always carries a whole number of samples; alternating transfers carry 48 and 40 bytes (6 and 5 stereo samples), so that the average rate works out as 44.1 bytes per transfer. A single isochronous transfer can carry 1024 bytes, and can carry at most 256 samples (at 24/32 bits).
Isochronous Transmission - Sistemas Fratec S.A.
https://www.fratec.net/faq/diccionario/isochronous-transmission/
The Isochronous Format data character will normally contain 8 DATA BITS plus 1 START BIT and include at least 1 STOP BIT, for a total of 10 bits. If 2 STOP BITS are used, then each character will contain 11 bits. Transmission Speed and Timing
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