Binaural VoiceStream Technology™

Capturing all of life’s most challenging soundscapes

Binaural VoiceStream Technology™ is the exclusive ability of Phonak hearing aids to stream the full audio bandwidth in real-time and bi-directionally for improved sound quality and unmatched speech understanding. This unique technology enables programs and features such as Speech in Wind, Speech in 360°, and DuoPhone.

Icon Binaural Voicestream

Speech in Wind has been proven to improve speech intelligibility by up to 28%. Speech in 360° achieves 80% speech intelligibility even at –10 dB signal-to-noise ratio.

(M. Latzel, 2013) (Phonak Field Study News, September 2010)


Speech in Wind

Detects and reduces wind noise and streams speech to the side most affected by wind, making voices clearer while improving comfort thereby improving the speech intelligibility by up to 28%.

  • What is Binaural VoiceStream Technology?
  • How does it work?
  • Where can it be used?
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Binaural VoiceStream TechnologyTM enables Phonak hearing aid wearers to focus on a single voice in challenging listening situations. This means more signal, less noise, and better understanding in more listening situations.


With Binaural VoiceStream TechnologyTM Phonak has the unique ability to stream, in real-time and bi-directionally, the full audio bandwidth. This unique technology enables programs and features such as Speech in Wind, Speech in 360°, and DuoPhone.

Benefits of Upgrading Hearing Aids | Phonak

Binaural VoiceStream TechnologyTM is useful in the following situations:

  1. In loud noise - StereoZoom
  2. In wind – Speech in Wind
  3. On the phone - DuoPhone

Products with Binaural VoiceStream Technology™

Binaural VoiceStream Technology is available on Quest, Venture and Belong Platform products.

Phonak Virto™ M-Titanium


Made from medical grade titanium. It is discreet, durable and light weight.

Phonak Naída™ Paradise


Offering next level, powerful sound, connectivity to smartphones, TV and more, and empowering smart apps.

Phonak Audéo™ Paradise


The hearing aid that delivers unrivaled** sound quality and empowering smart apps.

Phonak Bolero™ Marvel

Packshot Bolero M-M Hook

Phonak Bolero Marvel for mild to severe hearing loss combines maximum reliability and robustness with a clear, rich sound experience and multifunctionality.

Phonak Sky™ Marvel

Packshot Sky M Hook Family

The hearing aid family for mild to profound hearing loss, specifically optimized for kids and teens.