What is the Purpose of an FFT in Audio Measurements?

The FFT … an Audio Microscope. An FFT analyzer is like an audio microscope. It allows us to easily measure the frequency and amplitude of tones that are below the level of the noise. Traditional audio meters fail when the signal is lower than the noise level, but with an FFT, we can accurately measure tones that are 30 to 40 dB below the level of the noise. In many ways, our ears behave like an FFT audio measurement system. Our ears can detect the frequency and amplitude of tones that are as much as 30 dB below the ambient noise. This means that our ears are 30 dB better than traditional audio meters! This is why we can carry on a conversation in a noisy room, and this is why we can hear individual instruments within an orchestra. This is also why small defects need to be detected and corrected when designing top-quality audio gear. John Siau, Benchmark’s lead Engineer, will explain the “magic” of the FFT analyzer without the use of advanced mathematics. He will show an FFT analyzer in action, and he will measure a complete Benchmark chain to determine if it produces audible noise or distortion. Learn how to read an FFT plot and learn what to look for when selecting audio components. 👉 Benchmark Media Products: https://benchmarkmedia.com/collection... https://benchmarkmedia.com/collection... https://benchmarkmedia.com/collection... https://benchmarkmedia.com/collection... 👉 Benchmark Media App Notes: https://benchmarkmedia.com/blogs/appl... https://benchmarkmedia.com/blogs/appl... 👉 Switching Power Supplies are Noisy Myth Debunked: https://benchmarkmedia.com/blogs/appl... Cable Demo:    • Star Quad Microphone Cable Demonstration   Read: Problems with 0dBFs+ Levels: https://www.audioholics.com/audio-tec... ► Shop Dreamedia AV: https://dreamediaav.com/?ref=3 👉 Book your FREE custom home theater design service NOW: https://bit.ly/HTDesign 🛒 Shop Audio Advice: https://audioadvice.io/3NQEIDf Recommended Subwoofers: Perlisten D15s: https://bit.ly/PerlistenD15s Perlisten R212s: https://bit.ly/PerlistenR212s Perlisten R210s: https://bit.ly/PerlistenR210s Arendal 1961 1S or 1V: https://bit.ly/Arendal1961sub Arendal 1723 1S Sub: https://bit.ly/Arendal17231Ssub Recommended AV Separates Trinnov Altitude 32: https://bit.ly/TrinnovAltitude32 Trinnov Altitude 16: https://bit.ly/TrinnovAltitude16 Trinnov Amplitude 16: https://bit.ly/TrinnovAmplitude16 Trinnov Amplitude 8: https://bit.ly/TrinnovAmplitude8 Anthem AVM 70: https://audioadvice.io/40yMpFM Anthem AVM 90: https://audioadvice.io/3YySzDr Anthem MCA 323 Gen 2: https://audioadvice.io/3UQJBA2 Anthem MCA 525 Gen 2: https://audioadvice.io/4exQI7B Recommended AV Receivers: Onkyo TX-RZ70: https://audioadvice.io/4fbRoRs Denon AVR-X3800H 9.2CH AV Receiver: https://audioadvice.io/3AxgmeH Anthem MRX1140: https://audioadvice.io/3YzxZTl Anthem AVM 90 15.4CH Processor: https://audioadvice.io/3YySzDr Monolith M8250x 8CH Amp: https://bit.ly/8CHamp Recommended Speakers: SVS Prime 5.1 Speaker / Sub System: https://audioadvice.io/3JZJOt5 Polk R700 Tower Speakers: https://audioadvice.io/3C0TK2B Monolith Encore T6: https://bit.ly/EncoreT6 Klipsch RP-8000F II Tower Speakers: https://audioadvice.io/3445l4A Arendal 1723S Tower Speakers: https://bit.ly/Arendal1723s SVS Prime Elevation Surround: https://audioadvice.io/35aZCdR Perlisten S7t Limited Edition: https://bit.ly/PerlistenS7tLE Perlisten S7t: https://bit.ly/PerlistenS7towers Perlisten R7t: https://bit.ly/PerlistenR7t Perlisten R5t: https://bit.ly/PerlistenR5t Perlisten S3ic: https://bit.ly/PerlistenS3ic Perlisten R3ic: https://bit.ly/PerlistenR3ic Audioholics Recommended Cables: 250ft CL2 12AWG Speaker Cable: https://amzn.to/2vwS9QH 50ft 10AWG Speaker Cable: https://amzn.to/3DeMTT5 Locking Banana Plugs: https://amzn.to/2ZQt15x 9ft 4K HDR HDMI Cables: https://amzn.to/2WiIXeD Klipsch RP-8000F II: https://amzn.to/3M2Mt8n THX Short Reach 48Gbps HDMI Cables: https://bit.ly/THXHDMI-short THX Long Reach 48Gbps HDMI Cables: https://bit.ly/THXHDMI-long Disclosure: Audioholics earns commissions from qualifying purchases with the Affiliate Links used in the description of this video. We appreciate your support. Follow us on: Patreon:   / audioholics   FACEBOOK   / audioholics   TWITTER   / audioholicslive   #audiophile #electricalengineering #amplifier