Didn’t get it. Had to google. Bimodal only means that you have a HA and a CI, right? If it’s only about streaming, you would have to tell about the capabilities of the CI or at least the brand and model for me to be sure.
Summary: If you’re mainly interested in the streaming part: Use the ComPilot. It’s around 200€.
So hearing aids are connected to other devices via a protocol.
My Bolero B90’s stream data to each other so that I have clear sound in an ear even if that microphone didn’t pick that sound up too clearly: 1.) This is called binaural streaming.
My Phonak ComPilot streams data to my hearing aids with a 2.) proprietary Phonak protocol, it also connects to 3.) bluetooth devices such as my TV and mobile. This allows audio to be stream from e.g. your mobile phone via the Compilot to your hearing aids: This is called audio streaming.
Then a hearing aid can have a spool for receiving sound: 4.) telecoil. It’s been around the longest and it works great. However, I do notice that a lot of machinery outputs some electromagnetic field that you can pick up on. (So when I have the telecoil program on, I do find that some stores have a very aggressive anti-theft equipment set up.
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A hearing aid can have 5.)direct audio input (DAI). Basically these are those 3-pin connectors that lets you jack up your hearing aids with a cable or a device with DAI output.
Finally there is a 6.) FM protocol to connect devices. You have a sender and a receiver, just like with radios.
Roger Pen
So the Roger Pen 1.1. has 1.) Bluetooth to connect to a phone or whatever. 2) It has a audiojack-to-microUSB adapter to input audio into the Pen 3.) It has really good microphones to receive sound (!). 4) It has a FM sender to connect to a device that receives sound-data from it.
You can receive data from the Roger Pen with a Roger Mylink: A loop around the neck with a device hanging from it. ( Quite like the ComPilot. )
You can receive data with a Roger X. A receiver with an euro-pin DAI output, that can be slotted in for example the ComPilot or for example an audio boot that goes on the bottom of your HA.
You can receive data with a Roger 10 to 16. Receiver boots that go directly at the bottom of your Phonak HA’s.
So the use of a Roger Pen is as a very intelligent microphone, that can also stream audio from and to your phone.
If you’re mainly interested in the streaming part: Use the ComPilot.