L4-BTE-M-N Professional Digital BTE Hearing Aid

Short Description

The L4-BTE-M-N is a professional 4-channel digital BTE hearing aid designed for hearing aid distributors, hearing care providers, importers and OEM/ODM partners.

Powered by the ACOD2101 intelligent multi-core DSP, it combines 4 independent compression and amplification channels, 8 adjustable bands and 16 DSP processing channels with adaptive feedback cancellation, environmental noise reduction and dual-microphone technology.

With a maximum output of 123 dB SPL, maximum full-on gain of 46 dB, 4 selectable listening programs and multiple professional fitting functions, the L4-BTE-M-N provides a practical digital BTE solution for professional hearing care markets.

Product Description

The L4-BTE-M-N is a professional digital Behind-the-Ear hearing aid developed for B2B hearing care applications.

Built around the ACOD2101 intelligent multi-core DSP platform, the hearing aid combines digital signal processing with flexible fitting and acoustic management functions.

The L4-BTE-M-N provides 4 independent adjustable compression and amplification channels, 8 adjustable frequency bands and 16 DSP processing channels, allowing hearing parameters to be configured across different frequency regions.

Its ERAC1.0 context-analysis-based intelligent multi-compression technology uses a dual-knee compression architecture to support controlled amplification across different input levels.

For acoustic performance, the L4-BTE-M-N provides a maximum OSPL90 of 123 dB SPL, HFA OSPL90 of 118 dB SPL, maximum full-on gain of 46 dB, and HFA full-on gain of 38 dB.

The frequency response covers 200–5000 Hz, with equivalent input noise of 25 dB and a battery current of approximately 1.3 mA.

Key Features

4-Channel Digital Processing

The L4-BTE-M-N provides 4 independent compression and amplification channels for professional digital hearing adjustment.

8 Adjustable Frequency Bands

Eight independently adjustable frequency bands provide additional flexibility for frequency-specific fitting.

16 DSP Processing Channels

The ACOD2101 intelligent multi-core DSP provides 16 DSP processing channels for digital sound processing.

ERAC1.0 Dual-Knee Compression

ERAC1.0 intelligent multi-compression technology uses a dual-knee compression architecture to manage amplification across different input sound levels.

AFC2.0 Adaptive Feedback Cancellation

The integrated AFC2.0 feedback cancellation system provides two adjustment levels to help control acoustic feedback and improve listening stability.

ENDR1.0 Noise Reduction

The ENDR1.0 environmental detection and noise reduction system provides up to 15 dB of noise reduction for different listening environments.

Dual-Microphone Technology

The dual-microphone system supports sound pickup across different directions for more flexible everyday listening.

4 Selectable Listening Programs

Four listening programs can be configured to support different listening environments and user requirements.

Professional Internal Assessment Functions

The hearing aid includes:

• Internal Sound Field Assessment System
• Internal Audiometer System

These functions provide additional support for professional hearing assessment and fitting workflows.

Occlusion Effect Management

Integrated occlusion management supports greater fitting flexibility and helps manage the blocked-ear sensation that may occur with hearing aid use.

Nano Coating Technology

Nano coating helps provide additional protection for the hearing aid during everyday use.

Acoustic Performance

Parameter	Specification
Maximum OSPL90	123 dB SPL
HFA OSPL90	118 dB SPL
Maximum Full-On Gain	46 dB
HFA Full-On Gain	38 dB
Reference Test Gain	38 dB
Frequency Range	200–5000 Hz
Equivalent Input Noise	25 dB
THD @ 500 Hz	3%
THD @ 800 Hz	3%
THD @ 1600 Hz	3%
Battery Current	1.3 mA

Digital Processing & Fitting Functions

Function	Specification
Digital Channels	4
Adjustable Compression & Amplification Channels	4
Adjustable Bands	8
DSP Channels	16
DSP Platform	ACOD2101
Compression Technology	ERAC1.0 Dual-Knee
Feedback Cancellation	AFC2.0, 2 Levels
Noise Reduction	ENDR1.0, Up to 15 dB
SIW Technology	Supported
Dual-Microphone System	Supported
Selectable Programs	4
Internal Sound Field Assessment	Supported
Internal Audiometer	Supported
Adjustable Turn-On Delay	Supported
Occlusion Effect Management	Supported
Volume Control	Supported
Memory After Power-Off	Supported
Personalized Data Storage	Standard
Nano Coating	Supported
FM Interface	Optional
Auto Phone Function	Optional

Four Listening Programs

The L4-BTE-M-N supports four selectable hearing programs, allowing hearing care professionals to configure different program settings according to listening environments and user requirements.

Program configuration can be adjusted during professional fitting according to the target market and individual hearing needs.

Professional Fitting Support

The L4-BTE-M-N is designed not only as a digital amplification device but also as a professional fitting platform.

Its combination of:

• 4 independent compression channels
• 8 adjustable bands
• 16 DSP processing channels
• Internal audiometer
• Internal sound field assessment
• Adjustable turn-on delay
• Occlusion management
• Personalized data storage

provides hearing care professionals with multiple tools for configuring the hearing aid according to different fitting requirements.

Feedback and Noise Management

AFC2.0 Feedback Cancellation

Acoustic feedback can affect hearing aid stability and listening comfort.

The integrated AFC2.0 adaptive feedback cancellation system provides two adjustment levels to help reduce unwanted feedback during hearing aid use.

ENDR1.0 Environmental Noise Reduction

The ENDR1.0 system detects environmental sound conditions and provides noise reduction of up to 15 dB, helping manage background noise while maintaining digital amplification.

Practical User Functions

The L4-BTE-M-N includes multiple practical functions for everyday operation:

• Volume Control
• Four Selectable Programs
• Low Battery Notification
• Adjustable Notification Volume
• Memory After Power-Off
• Adjustable Turn-On Delay
• Personalized Data Storage
• Nano Coating Technology

Optional FM interface compatibility and Auto Phone functionality can also be discussed according to project requirements.

Designed for Professional B2B Hearing Care Markets

The L4-BTE-M-N is suitable for professional B2B customers including:

• Hearing aid distributors
• Hearing aid wholesalers
• Medical device importers
• Audiology clinics
• Hearing care centers
• Hearing aid retail chains
• Private-label hearing aid brands
• OEM and ODM partners

Its combination of professional digital processing, adjustable fitting functions and practical user features makes it suitable for customers looking to add a programmable BTE hearing aid to their product portfolio.

OEM & ODM Hearing Aid Solutions

AcoSound supports OEM and ODM cooperation for professional hearing aid partners.

Depending on purchasing quantity and project requirements, cooperation options can include:

• Private-label branding
• Logo customization
• Packaging customization
• User manual customization
• Product configuration
• Program configuration
• Market-specific product solutions

Optional functions such as the FM interface and Auto Phone function can also be discussed according to project requirements.

Contact our team with your target market, estimated purchasing quantity and customization requirements to discuss a suitable solution.

Frequently Asked Questions

1. How many digital channels does the L4-BTE-M-N have?

The L4-BTE-M-N provides 4 independent adjustable compression and amplification channels, together with 8 adjustable bands and 16 DSP processing channels.

2. What is the maximum output and gain?

The main acoustic specifications are:

• Maximum OSPL90: 123 dB SPL
• HFA OSPL90: 118 dB SPL
• Maximum Full-On Gain: 46 dB
• HFA Full-On Gain: 38 dB

3. How many listening programs are available?

The L4-BTE-M-N supports 4 selectable listening programs.

Program settings can be configured during professional fitting according to different listening environments and user requirements.

4. Does it support feedback cancellation?

Yes.

The L4-BTE-M-N uses AFC2.0 adaptive feedback cancellation with 2 adjustment levels to help control unwanted acoustic feedback.

5. Does it have noise reduction?

Yes.

The integrated ENDR1.0 environmental detection and noise reduction system provides up to 15 dB of noise reduction.

6. What DSP platform does it use?

The L4-BTE-M-N uses the ACOD2101 intelligent multi-core DSP platform with 16 DSP processing channels.

7. Does it support professional hearing assessment functions?

Yes.

The hearing aid includes an:

• Internal Sound Field Assessment System
• Internal Audiometer System

These functions provide additional support for professional fitting workflows.

8. Does it support volume adjustment?

Yes.

The L4-BTE-M-N supports volume control, four selectable programs and adjustable notification volume.

9. Does it remember settings after power-off?

Yes.

The hearing aid supports memory after power-off and personalized data storage.

10. Is the FM interface supported?

FM interface compatibility is available as an optional function.

Please confirm your project requirements when requesting a quotation.

11. Does it support Auto Phone?

The Auto Phone function is optional and can be discussed according to project requirements.

12. Can I order samples?

Sample requirements can be discussed before bulk purchasing.

Please provide your estimated quantity and target market so that our team can provide the appropriate sample information.

13. Do you provide OEM and ODM services?

Yes.

AcoSound supports OEM and ODM cooperation for distributors, importers and private-label hearing aid brands.

Customization options depend on order quantity and specific project requirements.