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Software de cancelación de eco acústico


Oferta Tecnológica
Una empresa tecnológica sueca ha desarrollado un software adaptable y portátil de banda ancha y dúplex completo para cancelación de eco acústico, reducción de ruido, selección automática de micrófono, etc. Este software puede integrarse en dispositivos de comunicación manos libres para conseguir una experiencia acústica alta y clara sin ecos ni ruidos. El software está indicado para empresas interesadas en lanzar nuevos productos de audio capaces de ofrecer una buena experiencia de usuario o compañías que quieran mejorar la calidad de sonido en sus productos o servicios actuales. Se buscan socios en todo el mundo dentro de la industria de audio para establecer acuerdos comerciales (licencia con asistencia técnica).


Acoustic echo cancellation software
A tech company from Northern Sweden offers adaptable and portable software featuring full-duplex wide-band acoustic echo cancellation (AEC), noise reduction (NR), automatic mic selection (AMM) and more. This software module can be put into any hands-free communications product to attain a loud and clear sound experience, with no disturbing echoes or noise. They are looking for partners in the worldwide audio industry for commercial agreements based on licensing with technical assistance.
The company offers adaptable and portable software featuring full-duplex wide-band acoustic echo cancellation (AEC), noise reduction (NR), automatic mic selection (AMM) and more. This software module can be put into any hands-free communications product to attain a loud and clear sound experience, with no disturbing echoes or noise.

Their acoustic echo cancellation technology is the result of over a decade of R-Y-D, springing out of academic research performed by the founders. Today the company employs a team of signal processing and embedded software experts, including several PhD level researchers. Their software is designed for adaptability, and has been ported to many different platforms, including ARM processors and ADI and TI digital signal processors. They also offer industrial design and electronic and mechanical design services, from the level of advice and feedback on designs, to the design of a complete novel product. The company´s technology forms a critical part of products such as video conferencing equipment, speaker phones, intercom equipment, installed audio microphone mixers, and more. Several reference designs for e.g. conference phones and microphone mixers already exist.

Software module specifications:

* Echo return loss enhancement: ~30 dB*
* Noise reduction: 0 - 18 dB
* Computational load: ~62 MHz / AEC channel**
* Data memory usage: ~72 kB / AEC channel**
* Sampling frequency: 48 kHz
* AEC tail: 256 ms- 512 ms
* Total echo suppression (AEC+NLP***): >60 dB

*Will depend on the actual physical environment, e.g. loudspeaker driver performance, but typically 25-35 dB cancellation can be achieved.
**Running on an ADI Sharc 21479 Processor.
*** NLP = non-linear processing.

This software module solution is ideal for companies that would like to launch new audio related products and make sure they can deliver a good user experience audio-wise or companies that would like to increase the audio quality in their existing products or systems.

They are open towards commercial agreements in terms of license deals with technical assistance from the Swedish company.
Advantages and Innovations:
The company has a unique technology in that it is world leading in performance and adaptable/scalable allowing it to easily fit in many different platforms and product applications ranging from door phones to multi microphone speaker phones.

Key features are superior audio quality and robustness in acoustically challenging environments. The technology is patented and proven and currently operating in a number of commercially available products.

Their advantage over companies that develop complete products is that these companies do not license their technology, but manufacture their own products, which they sell to the end-customer. These companies do however re-brand their products. As a contrast, The Swedish company´s business focus is to work closely together with the customer to provide custom solutions. The companies that specialize in signal processing solutions focus on software and/or consultancy, while this Swedish company can provide everything from software to electronics and mechanics. Besides this, the main competition comes from existing and potential customer´s development departments. Their advantage in this case is that they quickly can provide turn-key solutions for speech signal processing, electronics and/or mechanics, enabling the customer to focus on other product aspects.
Stage of Development:
Already on the market
Patent(s) applied for but not yet granted,Patents granted
CommeR Statunts Regarding IPR Status:
Patents have been granted for core aspects of the audio technology. Patents are pending for parts of the automatic microphone selection technology.

Partner sought

Type and Role of Partner Sought:
The Swedish company are looking for companies active in the field of consumer electronics goods, as for instance smart phones, head-sets and loudspeakers. They are also looking for companies active in the field of enterprise communications, as conference phones, conference audio systems, video conference systems, car multimedia systems, smart home and security systems.

This with the aim to reach a license deal and, with technical assistance from the Swedish company integrate the audio technology into new or existing products and systems.


Type and Size of Client:
Industry SME 11-49
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Restrict dissemination to specific countries:
Austria, Belgium, Canada, China, Croatia, Czech_Republic, Denmark, Finland, France, Germany, Japan, Norway, Portugal, United Kingdom, United States


Technology Keywords:
01006001 Audiovisual Equipment and Communication
01006009 Procesado de señales
01003017 Speech Processing/Technology
01006015 Telefonía VoIP, acceso remoto