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Our hearing aids are different. Each model contains five cutting-edge technologies that work together to create a superior sound quality that you’re sure to find crisp, clear and comfortable.

What’s more, our award-winning ‘self-fit’ hearing system IHearYou® empowers you to fine tune our hearing aids yourself, wherever you are.

Take control of your hearing with IHearYou®

IHearYou® is the world’s first hearing aid solution that allows you to easily tune your acoustic preferences yourself, using your smartphone or computer, ensuring you are entirely satisfied with the way your Blamey Saunders hearing aids sound.

The clarity of these hearing aids is excellent – I am hearing sounds very clearly and my husband says I’ve stopped shouting at him. I’m looking forward to setting up extra programs.

Your technology is far superior to my previous hearing aids.

Judy Kingwell

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Sonite™ — comfortable, high definition sound

Sonite™ is the latest in Blamey Saunders hears sound technology. It constantly analyses your environment in detail and makes automatic adjustments at 96 frequencies to match your personal requirements. Developed to deliver a truer to life sound quality than traditional “compression” hearing aid technology, Sonite™ allows for optimal comfort and speech understanding in noise and in quiet. The sounds you want to hear are maximised while those you don’t are minimised.

ADRO® — 32 or 64 channels of adaptive dynamic range optimisation

ADRO® ensures that sound is always presented at a comfortable and audible level. Not too loud, and not too soft at every frequency.

Clinical trials conducted by the Cooperative Research Centre for Cochlear Implant and Hearing Aid Innovation in Melbourne showed that ADRO® was preferred over conventional Wide Dynamic Range Compression in most situations by most of the 42 experienced hearing aid users who participated in the trials. These preferences were associated with improved sound quality, improved speech perception in quiet and in noise, and improved loudness control.

Data from four studies showed that listener satisfaction was maximised when the loudness of sounds was “comfortable” (rating 4 on the loudness scale). This is exactly what ADRO® is designed to do.

Graph showing listener satisfaction with sounds of varying loudnesses
Figure 1: User satisfaction vs loudness. Listeners were presented with sounds “naturally” categorised as soft (e.g. a whisper), loud (e.g. a siren) or average, but at different loudnesses. The listeners rated the sounds for loudness and their satisfaction with the sound. Maximum satisfaction for all sounds was achieved when the loudness was “comfortable”. Blamey and Martin, JAAA 20:272–282 (2009)

Automatic adaptive directional microphone

A directional microphone increases the signal-to-noise ratio by reducing the loudness of background noise from some directions. An adaptive microphone selects the directional response of the microphone that gives the best signal-to-noise ratio, and an automatic directional microphone turns on automatically when background noise is present.

The adaptive directional microphone (ADM) performs better by enabling good speech perception at a lower signal-to-noise ratio than either an omnidirectional or fixed directional microphone.

comparing Hearing aid microphone styles: omnidirectional, supercardiod, and adaptive-directional
Figure 2: comparison of noise intelligibility thresholds (the lowest signal-to-noise ratio at which you can still understand speech) for three microphones and noise source locations. Lower numbers indicate better performance; the Adaptive Directional Microphone out-performs the fixed supercardiod pattern and the omnidirectional microphone in all situations. Blamey, Fiket, and Steele, JAAA 17:519–530 (2006)

… during the consultation for supply and fitting of my new aids, I was quite overwhelmed by the crystal clarity and “surround sound” nature of what I was hearing, when the aids were first switched on – truly a quantum leap from the sound I had been experiencing from all my previous aids!

As well, I am finding my comprehension of others in crowded and noisy environments, much improved and the wind noise suppression features of my aids, when riding my push bike regularly, are greatly improved over all my previous aids.

Roger Stevenson

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Multi-channel adaptive directional microphones

A typical conversation takes place face to face, with speech sounds coming from one direction and ambient noise coming from all directions. Blamey Saunders hearing aids use single-channel adaptive directional microphones to “tune out” the strongest or loudest ambient noise from the side or from behind. Our new Opus hearing aids use multi-channel adaptive directional microphones to make speech comprehension even easier in complex soundscapes. Rather than cancelling only the strongest noise, the MCADM can reduce unwanted noises from different directions in each frequency channel.

Adaptive feedback cancellation

Acoustic feedback occurs when an amplifier has its microphone close to its output speaker and sound is amplified over and over again around the feedback loop. In a hearing aid this gives rise to a high-pitched whistle because the feedback loop is so small.

The acoustic properties of the loop change if you put your hand or a hat or another object close to the hearing aid, so the feedback canceller needs to be adaptive to prevent whistling quickly when conditions change. This is especially important for open-ear devices that have an open path for sound between the output and the input of the hearing aid.

feedback path in a hearing aid and feedback prevention
Figure 3: Feedback path in a hearing aid. Amplified sound from the speaker can travel back to the microphone, causing feedback.

Our hearing aids use a patent pending Dynamic Feedback Control system that:

Ultra-low-delay sound processing

Digital hearing aids insert a delay into the amplified sound, due to the digitisation at the input, processing, and digital-to-analog conversion at the output. The amplified sound then adds to the air conducted sound and the bone conducted sound in the ear canal. The shorter the delay, the better the sound quality, with long delays producing an echo of the sound. Using a patented technology, Blamey & Saunders hearing aids have the shortest delay of any device in the industry, with no perceptible distortion or echo.

Diagram on how hearing aids work
Figure 4: When using non-occluding hearing aids (such as Blamey & Saunders open-fit devices), both the ambient natural sound and the amplified sound from the hearing aid are present in the ear canal.
Comparison of different signal delays and hearing perception
Figure 5: Perception of sound changes as the processing delay time increases. If the delay is very short, the hearing aid user will simply perceive the sound as louder. Blamey & Saunders hearing aids are capable of achieving this.

Open-fit technology

Open-fit technology increases physical comfort and reduces visibility of the devices.

Discreet blamey saunders behind the ear hearing aid
Figure 6: An SIE-64 hearing aid in use, demonstrating the open-fit and low-visibility nature of the device.

Our Opus, SIE and Symphony hearing aids are “open-fit” and do not require an earmold. The end of the sound tube just sits open at the entrance to your ear canal. This has the following advantages:

  1. An unblocked ear feels more comfortable, so you are more likely to wear the device
  2. Your own voice, chewing, and swallowing sound more natural
  3. Natural sound enters your ear canal just the same as it always did, with the hearing aid providing additional amplification (enhancement) rather than the only source of sound (substitution).

The reason this is a recent development in hearing aid technology is that:

  1. With an open pathway, you need a good feedback canceller to prevent amplified sound being re-amplified (we use an excellent feedback canceller)
  2. A low delay is required to prevent a time delay between natural sound and the amplified version causing an echo (we achieve an industry-low delay of 1–2 milliseconds).
ADRO® is a registered trademark of Wolfson Dynamic Hearing Pty Ltd