EVOKE EDITOR
●Evoke is a feature on selected ON Semiconductor pre-configured products which allows hearing aids to play alerting acoustic indicators that are richer and more meaningful than simple tones played out consecutively. These acoustic indicators are played out whenever one of seven pre-defined events occurs on the hearing aid. A total of eight acoustic indicators are available for indicating events, and a specific indicator can be mapped to more than one event. The list of events includes: four memory selections, digital volume control up and down behaviour, digital volume control at maximum and minimum values and low battery level.
●An Evoke acoustic indicator consists of up to four faded simple tones or six damped tones, with each tone’s
frequency, amplitude, start time, end time, and decay rate (optional) configured independently. A damped tone starts at its maximum specified amplitude value and decays with time in an exponential matter. A total duration must also be specified for each indicator, allowing some time for a period of silence following the end of the audible tones. With this flexibility, alerting sounds such as musical chords, short melodies and telephone dial tones are easy to create.
●There are two ways of modifying the indicators that are stored in the part. The first is through the automated Evoke Editor in IDS. The second is a manual method for advanced users. The two methods are outlined below.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2021/8/6 |
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Rev. 2 |
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AND9022/D |
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296 KB |
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