Dear Retekess Engineering Team,
I am interested in purchasing the TE105 RIC hearing aid for use in the XXXXX, particularly for advanced self-fitting and accurate reproduction of music transients.
Before ordering, could you confirm the following?
1. Processing latency: What is the measured microphone-to-receiver latency in milliseconds in General and Music modes?
2. DSP control: Can Impulse Noise Reduction, Noise Reduction and Speech Enhancement be individually switched fully OFF in the ForSound iOS app?
3. Compression: Can the 16 WDRC channels be programmed individually, including compression ratios, kneepoints and attack/release times, or does the app only provide four broad frequency controls?
4. Music mode: Does Music mode bypass impulse suppression, speech tracking and other adaptive algorithms?
5. Programming access: Can the original fitting be exported, backed up and restored? Is a BLE fitting SDK available for independent iOS developers?
6. EU availability: Can you provide the EU MDR Declaration of Conformity for the exact TE105 model, confirm shipping to the Netherlands and clarify the return conditions after actual use?
7. Frequency response and bandwidth:
-What is the effective acoustic frequency response of the TE105, in Hz?
-What are the lower and upper frequency limits at −10 dB relative to the reference response?
-Does the device provide usable amplification at 6 kHz and 8 kHz?
-Can you provide frequency-specific maximum gain curves, particularly from 2 to 8 kHz?
-What is the achievable high-frequency insertion gain when using an open dome?
-What is the highest frequency band that can be independently adjusted in the ForSound app?
I have asymmetric high-frequency hearing loss, reaching approximately 70 dB HL at 4 kHz and 75 dB HL at 8 kHz in my right ear.
I prefer an open dome.
My primary requirements are natural reproduction of acoustic transients, low processing latency (below 5 ms), sufficient high-frequency amplification and independent user control of DSP parameters.
Thank you for your technical assistance.
Kind regards,
XXX
Dear XXX,
Thank you for your detailed technical inquiry.
Based on your requirements (especially the need for self-fitting due to asymmetric high-frequency hearing loss and your preference for an open dome), I have consulted with our engineering team. We believe the TE105 can meet your needs.
Please find the direct answers to your questions below:
1. Processing Latency
The measured microphone-to-receiver latency in General mode is < 3 ms, ensuring natural sound reproduction well below your 5 ms threshold.
2. DSP Control
Yes. In the ForSound iOS app (under Advanced Settings), you can individually switch OFF Impulse Noise Reduction, Noise Reduction, and Speech Enhancement.
3. Compression & WDRC Channels
The app does not allow you to program the 16 WDRC channels individually (e.g., adjusting attack/release times or kneepoints). The app is designed for user-friendly self-fitting, providing standard frequency band adjustments rather than clinical fine-tuning.
4. Music Mode
Yes. Music mode is designed to bypass impulse suppression, speech tracking, and other adaptive algorithms to preserve the natural dynamics of music transients.
5. Programming Access
Exporting/backing up the original fitting and an SDK for independent developers are not available for this model.
6. EU MDR & Return Conditions
Currently, we do not have an EU MDR Declaration of Conformity for the TE105 (we provide US FDA compliance).
Note: We do have the TE202 which is EU MDR compliant and uses a more advanced chip; however, it does not support self-fitting (which is crucial for your specific hearing profile).
For the TE105, we offer an extended 60-day return window for hearing aids (longer than our standard policy), provided the device is in good working condition with no physical damage.
7. Frequency Response & Bandwidth
-Please refer to the attached test graph (Left Ear; right ear parameters are consistent).
-The device provides usable amplification up to 8 kHz.
-Self-Fitting: If you have an audiogram from a local clinic, you can manually input it in the app, and the compensation parameters will be written into the hearing aid.
-Domes: The TE105 comes with 6 pairs of silicone domes in total (2 pairs of double-layer open domes, and 4 pairs of double-layer closed domes).
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