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HFP Device Startup - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/startup
The audio driver can use this information to create and initialize a KS filter or filters representing the paired HFP device. The audio driver uses IOCTL_BTHHFP_DEVICE_GET_DESCRIPTOR to get this information. The audio driver can also retrieve the Bluetooth address of the paired HFP device. Each paired HFP device has a unique …
HFP Device Connection - Windows drivers | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/hfp-device-connection
The HFP Device connection topic discusses how the audio system determines and handles connection status information for a Bluetooth hands-free profile (HFP) device. As required for all audio drivers, the audio driver must support KSPROPERTY_JACK_DESCRIPTION. The audio driver maintains an IsConnected field in the filter factory context. The audio driver …
Stream audio over Bluetooth Hands-Free (HFP) | Bluetooth ...
http://bluetoothstreamerpro.com/about/
Most brand new automobiles that have Bluetooth are able to stream stereo music via A2DP protocol and make phone calls via HFP protocol. This app will not help you much with these vehicles. However, vehicles just a few years old that have Bluetooth installed from the factory only have HFP protocol, so they can only make phone calls via Bluetooth.
Quick Guide to Bluetooth Profiles - HSP, A2DP, AVRCP, …
https://mobilityarena.com/bluetooth-profiles-protocols-hsp-a2dp-avrcp-hfp/
HFP (Hands Free Protocol) is a Bluetooth profile that enables a two-way wireless speaker-phone to be used with a Bluetooth phone, and is usually found in Bluetooth hands-free car kits. This is like a twin sister to HSP Bluetooth protocol and on its own supports mono audio.
Hands Free Profile (HFP)
https://mxhelp.danlawinc.com/hands_free_profile.htm
HFP Testing . Test PC Working as a Bluetooth HFP Audio Gateway (AG) 1. Set the Bluetooth Device Class to SMARTPHONE in the PairUnpair Transform's Properties box as shown below: 2. Pair the local PC with the remote device using Pair command as discussed in Pair/Unpair–Testing.
Is it possible to select bluetooth audio codec in HFP profile?
https://stackoverflow.com/questions/58955644/is-it-possible-to-select-bluetooth-audio-codec-in-hfp-profile
1 Answer1. Show activity on this post. The general answer is NO. When either side HFP want to make an audio channel, the two side will negotiate at the time and based on the many factors and run-time conditions to chose a best fit.
Developing Bluetooth Audio Devices - Silicon Labs
https://www.silabs.com/documents/login/presentations/Developing-Bluetooth-Audio.pdf
• Hands-Free Profile (HFP) • Enables voice transmission from for example a mobile phone to a wireless headset • Audio transmitted over a synchronous SCO channel and a separate data channel used for controlling the audio stream (AT commands) • Features – Mono audio – Sampling rates from 8 to 16kHz – Typical audio delay 20-30ms
What is a Bluetooth profile HSP, HSP, A2DP, AVRCP? | Philips
https://www.usa.philips.com/c-f/XC000008687/what-is-a-bluetooth-profile-hsp,-hsp,-a2dp,-avrcp
HSP (Handset Profile) – provides the basic functionalities needed for communication between a handset (cell phone) and a headset. HFP (Hands Free Profile) – has somewhat extended functionality to HSP and was originally intended to control a cell phone from a stationary, in-car, hands-free unit. A2DP (Advanced Audio Distribution Profile) – allows the …
More about Supported Bluetooth Profiles - Audio Precision
https://www.ap.com/technical-library/more-about-supported-bluetooth-profiles/
HFP. HFP is the “Hands Free Profile.”. This profile supports only low bit rate, “voice-quality” audio, using the CVSD codec at 8 kHz sample rate or the HSP 1.6 "wideband speech" mSBC codec at 16 kHz*. This profile is used for phone-to-headset communication and for phone-to-car kit hands free communication.
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