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Mi A1

[Discussion] Mi A1's High-quality Audio Technology Explained

2017-09-15 14:07:50
69757 447
Hi Mi Fans,
The Xiaomi Mi A1 recently launched, having a new feature we heard about DIRAC HD Sound and High-quality audio smart power amplifier. Let’s starts here. An industry leading 10V smart power amplifier paired with the advanced Dirac HD Sound algorithm provides powerful speaker audio output and deep lows for both music and phone calls.The independent audio amplifier supports high-impedance headphones of up to 600Ω.

Dirac specializes in digital sound optimization solutions. Whether you’re watching a movie at home, relaxing with headphones or using your mobile device as a makeshift boombox, audio quality can make or break the experience. Our digital audio solutions fundamentally improve sound quality across all devices for a pristine, dynamic and immersive listening experience.

How does Dirac HD Sound work?
Each supported speaker model has been individually analyzed by the manufacturer using Dirac’s calibration tool. Once an acoustic model of the speaker has been built, Dirac’s advanced algorithms create a tailored digital controller that optimizes the sound performance for each speaker model. This controller is then shipped with every supported product to deliver superior performance to the listener.

High-quality Audio
The Mi A1 comes with some notable audio features such as a dedicated headphone amplifier with support for electrical resistance up to 600Ω. For its speakers, the Mi A1 also features a 10V power amplifier which is said to push deeper lows and higher volume. DHS Audio calibration, standalone audio amplifier. The Mi A1 is also equipped with DHS Audio Calibration Algorithm for an enhanced audio experience on headphones and speakers.

Small speakers can sound better than you ever imagined
  • Clearer, more natural sound with richer details
  • Tighter, more powerful bass
  • Loud, clear playback while retaining a natural timbre
  • Improvements to overall sound quality

Dirac Power Sound™ delivers full-sized audio playback from even the tiniest of speakers. No matter what kind of music you love listening to, you’ll enjoy a clearer sound and more defined bass that’s loud enough to keep you rocking in any environment.

Dirac HD Sound
  • Genuine audio performance optimization with enhanced clarity.
  • Customized for individual device measurements.

  • Tailored (branded) sound character.
  • A more natural and transparent sound.
  • Improved bass range and definition.
  • A more dynamic sound stage.

Dirac HD Sound® is a state-of-the-art digital audio performance enhancement technology that optimizes all types of sound systems outfitted with a loudspeaker or transducer, from home speakers and mobile devices to headphones. By correcting impulse and magnitude frequency response, Dirac HD Sound drastically improves musical staging, clarity, voice intelligibility, and bass fidelity.
Dirac HD Sound® is tailored to each specific earphone or loudspeaker model based on meticulous acoustic measurements. Unlike EQ or effect-based solutions that just mask poor sound quality, Dirac HD Sound® offers fundamental audio performance improvements.

Multiple measurements
Dirac HD Sound obtains a correction using several acoustic measurements at different positions in an anechoic or semi-anechoic environment, taking into account how the sound field varies in space. Time-domain and frequency-domain corrections are computed from all of the measurements, not just an average impulse or frequency-response average, in order to optimize the entire sound field created by the audio system.

Mixed-phase technology
  • impulse response correction can only be obtained using mixed-phase filters
  • A look-ahead buffer makes it possible to perform impulse response correction, by mixed-phase filtering.
  • Other attempts at loudspeaker correction employ minimum-phase or linear-phase filters and thus fail to optimize impulse response.
  • Dirac HD Sound optimises the impulse response and the magnitude response of the sound system, thus making it less sensitive to the challenges of room acoustic.
Implementation for best accuracy
  • Traditional EQ uses IIR filters for lowest processor usage
  • Many loudspeaker correction filters use FIR filters for ease of optimization
  • A Dirac proprietary filter structure ensures maximum resolution with minimum processor usage.
Thank You


Number of participants 8 Experience +87 Pack Reason

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2017-09-15 14:07:50
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Awesome thread bro, thanks for sharing :) :) :)
2017-09-15 14:20:29

Tech - Moderator
Mi FC Trivandrum - President

Mi FC President

Arbaz | from Redmi Note 4


well explained
2017-09-15 14:43:24
Tech Launcher
Amazing bro
2017-09-15 14:48:35
Gaurav Basetia
2017-09-15 15:09:46
a1 u r superb m waiting for delivery
2017-09-15 15:15:02

Rookie Bunny

1699803122 | from Redmi 4


wese superb
2017-09-15 18:04:29

Grandmaster Bunny

Prem | from Redmi Note 4


Good informative and useful information thanks for sharing this with us
2017-09-15 20:58:35

Master Bunny

allabtBiswajit | from MI MAX 2


nice information
2017-09-15 21:14:29

Master Bunny

DGP 007 | from Redmi Note 3


Good information
2017-09-15 21:41:21

Master Bunny

Killer DK | from Redmi Note 4


Thanks For Sharing.
2017-09-15 21:41:32
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