Concept explainers
Touch- Tone Phone On a Touch – Tone Phone, each button produces a unique sound. The sound produced is the sum of two tones, given by
Where l and h are the low and high frequencies (cycles per second) shown in the illustration. For example, if you touch 7 the low frequency is
Use a graphing utility to graph the sound emitted by touching?
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Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (4th Edition)
- Algebra and Trigonometry (MindTap Course List)AlgebraISBN:9781305071742Author:James Stewart, Lothar Redlin, Saleem WatsonPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage