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It's a new project that uses EQ presets within the app to simulate the sound signature and noise cancellation from various headphone models. I wanted to correctly replicate the sound signature and noise isolation graphs from a site called In-Ear Fidelity, or Crinacle (great site by the way, the FR graphs are pretty accurate), and the noise isolation graphs from RTINGS.com (also a great site). I also used Wavelet, which has a feature called AutoEQ (compensates headphones to the Harman target, without it replicating was not possible). I also replicate sound signatures from its AutoEQ. If you want to learn more, click on the website link: https://headphonesounddemo.wixsite.com/home If you don't want to bother visiting the website, here are the EQ settings in Wavelet (The reason for this is that RTINGS.com uses a different target curve. So I tailored based on that): Headphone presets from Wavelet or In-Ear Fidelity don't need EQ settings from Wavelet (not needed because Crinacle's graph tool has Harman as one of the preference targets and AutoEQ uses Harman). If Wavelet is not working properly when MusicFX is activated, enable Legacy Mode. Then, download the presets down below (after downloading, go to Poweramp, then EQ, then press and hold any preset and import it). Wavelet: Release I (31 presets): Release I.json Release II (38 presets): Release II.json Release III (45 presets): Release III.json Release II improves the 1MORE Triple Driver preset (replace said preset by deleting the one without "(2)" on front and rename without the number. If Release II is downloaded first, delete the one with "(2)") and adds ANC on/off presets for Anker Soundcore Life Q30 (just delete the Life Q30 preset) Release III improves the Samson SR850 (follow the same procedure as with prior release) In-Ear Fidelity: Release I (30 presets): Release-I.json Release II (11 presets): Release-II.json RTINGS.com: Release 1 (27 presets): PresetsV1.json Release 2 (30 presets): PresetsV2.json Release 3 (43 presets): PresetsV3.json With the "NC" presets, it's ideal to apply the EQ presets in recorded noisy environments in binaural audio, which you can download on the https://bit.ly/3GA0QvR link or feel free to download related to the four environments (busy traffic, subway, coffee shop and airplane cabin) on the https://www.acethinker.com/url-to-mp3 link. Make sure to set the volume to a realistic level before applying the EQ presets to have a better idea of how different headphones will perform on said environments. Release 1 "NC" (29 presets): Release I (NC).json When downloaded, you notice that each headphone preset has an acronym at the beginning. They mean: B: Bone conduction C.: Closed-back H: Hybrid E: Earbuds I: In-ear O: Open-back S: Semi-open For the "NC" presets, they mean: PNC: Passive Noise Cancellation ANC: Active Noise Cancellation Disclaimer Note that the simulation of sound signature and noise cancelling will not be 100% accurate, as we do not all perceive sound in the same way, and won't reflect actual noise cancelling performances. Factors such as ear shape, fit, seal, total harmonic distortion, age and headphone design indicate that you will not get the same experience that the real counterpart will deliver (one preset simulates a bone conduction headphone, which is completely different because they vibrate without drivers). The FR graphs were replicated by eye only with Wavelet presets, which leads to some inaccurate matchings. I will continue to add more presets in the near future. Any opinions and suggestions will be welcome. RTINGS.com preview: This is the actual graph from RTINGS.com: Noise isolation preview "Bose QuietComfort 35 II" (Active Noise Cancelling): Some filters overlap at the same frequency to achieve more than -15dB Noise isolation preview "Bose QuietComfort 35 II" (Passive Noise Cancelling): Graph showing both ANC in blue and PNC in gray: In-Ear Fidelity preview: Actual graph from crinacle.com: Wavelet preview: AutoEQ preset: AutoEQ preset (upside-down for simulation, like in the preview):