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Service and support for AB customersMore
Designed to provide hearing that closely resembles how a normal ear hears, AB’s HiRes Fidelity 120™* sound processing captures and delivers the full dimension of sound for a more complete hearing experience.
Only HiRes Fidelity 120 offers five times more sound resolution than any other cochlear implant system – 120 spectral bands – to help you or your child hear all the colorful details of sound: birds chirping, rain falling, the various layers of music. And with HiRes Fidelity 120, your child has the opportunity to hear all the details necessary to understand speech and develop strong language skills.
This new sound processing strategy is designed to optimize battery life while delivering the same great performance of HiRes Fidelity 120 with AB’s unique current steering technology.
“The best way to describe the clarity of HiRes vs. Fidelity 120 is comparing it to watching a conventional TV versus a new high-definition TV. I can understand and easily follow the conventional TV, but the high-definition adds elements of detail and sharpness that make it even more rich, lively, and enjoyable. A particularly exciting experience was when I attended a concert and listened to the music using the Harmony BTE with HiRes Fidelity 120. I was amazed at how much better I was able to distinguish between different instruments playing at the same time, along with the vocalists. It was immediately apparent that I was hearing so much more detail with Fidelity 120.”
— Kristin P., implanted age 30
Spectral resolution refers to how well the cochlear implant delivers frequency, or “pitch” information, to the inner ear through a proper sound intensity. Typically, cochlear implant wearers hear different pitches when different electrodes are stimulated and when the rate of the stimulation varies. The better the spectral resolution, the better you can hear these pitches for better hearing in noise and music enjoyment. Improved spectral resolution is designed to more closely resemble normal hearing.
Just the way a high-definition television delivers a higher-quality visual picture, HiRes Fidelity 120 is designed to deliver a higher-quality sound representation. The higher the spectral resolution, the better a wearer can hear a frequency or “pitch.” High spectral resolution is particularly important for listening in noisy environments as well as hearing and appreciating music. AB’s HiRes Fidelity 120 delivers the highest spectral resolution – 120 spectral bands for five times more than other brands – to help you hear every word of your important meeting or every note of your favorite song.
|Capability||Conventional||HiResolution||Features and Benefits|
|Intensity (Amplitude)||45dB||Up to 80 dB||Wide programmable IDR captures more of the acoustic environment to help users hear sounds loud to soft, near and far|
|Spectral Resolution (Spectral Bands)||Up to 22 bands||Up to 22 bands||More accurately delivers the entire captured spectrum to enhance music perceptionand ability to hear in noise|
|Temporal Rate (Timing)||
|Preserves fine temporal structure of the input signal to better distinguish voices, environmental sounds, appreciate music, and hear in noisy environments|
Other implants use a single current source to stimulate only one electrode at a time, limiting the number of potential spectral bands. Only AB’s HiRes Fidelity 120 has multiple current sources, enabling two or more electrodes to be stimulated at the same time. This simultaneous stimulation allows current to be “steered” between electrodes, resulting in 120 spectral bands of sound, giving you or your child the opportunity to hear more pitches. Studies with research software simulating this effect have shown that wearers can perceive up to 450 pitches.1
This important study proves that Harmony recipients have the opportunity to hear and enjoy music better than ever before.2,3 HiRes Fidelity 120 sound processing is the only strategy that can implement simultaneous current steering to deliver the dimensions of music (loudness, pitch, timing) for a full musical experience. AutoSound’s programmable wide Input Dynamic Range (IDR) and automatic volume control adjust automatically so that you don’t miss a note. And the naturally placed T-Mic microphone makes it effortless to use your MP3 player. This advanced technology only from AB works in concert so that you can hear your best.
“Current steering (HiRes Fidelity 120)...represents arguably the most exciting development in sound processing strategies since the introduction of the multichannel implant...the ability to perceive music is being increasingly viewed as a pinnacle of achievement that may be possible through cochlear implants.”
— Charles J. L., MD; Associate Professor, Department of Otolaryngology, Johns Hopkins Hospital.4
Studies have shown that compared to using other sound processing strategies, AB wearers using HiRes Fidelity 120 hear speech better in noise and experience improvements in music and sound quality.5-7
*HiRes Fidelity 120 and HiRes Optima are approved for use in adults and in children over the age of 12 months
Firszt JB, Koch DB, Downing M, Litvak L. (2007) Current steering creates additional pitch percepts in adult cochlear implant recipients. Otology and Neurotology, 28(5):629-636.
Quick A, Koch DB, Osberger MJ. HiResolution with Fidelity 120 Sound Processing: Listening Benefits in CII and HiRes 90K Implant Users. Poster Presentation at the Conference on Implantable Auditory Prostheses, July 15-20, 2007, Lake Tahoe, CA.
Mirza S, Douglas SA, Lindsey P, Hildreth T, Hawthorne M. 2003. Appreciation of Music in Adult Patients with Cochlear Implants. Cochlear Implants International. 4(2): 85-95.
Limb C. 2006. Cochlear Implant-Mediated Perception of Music. Current Opinion in Otolaryngology & Head and Neck Surgery. 14:337–340.
Firszt JB, Holden L, Reeder R, Skinner MW. (2009) Speech recognition in cochlear implant recipients: comparison of standard HiRes and HiRes 120 sound processing. Otology and Neurotology 30:146–152.
Brendel M, Buchner A, Kruger B, Frohne-Buchner C, Lenarz T. 2008. Evaluation of the Harmony Sound Processor in Combination with the Speech Coding Strategy HiRes 120. Otol Neurotology 29:199-202.
Oleson J, Lesh S, Gfeller K, Knutson J. The Effect of Advanced Bionics’ HiRes 120 on Self-Report of Music Enjoyment. Poster Presentation at the 10th International Conference on Cochlear Implants and Other Implantable Auditory Technologies, April 10-12, 2008, San Diego, CA.