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02

2012-Aug

Maximizes the performance of your earphones.

Developer: Accudio™ IP ADRESS: Views: 95758

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[about Golden Ears] 

Our main business includes evaluating various audio products ranging from earphones, headphones, loudspeakers, smartphones, MP3 players, sound cards, and DAC, by measuring sound quality of these devices using the state-of-the-art measuring equipment. Based on the measured data, full assessments are performed and offered to our clients, which includes a number of global leaders in audio products. A full range of product consultation is also available for those with specific needs. 

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Brüel & Kjær Head and Torso Simulator

 

 

 [The most effective way to enhance sound quality]

Sound from your music files are reproduced through a series of connected components. Electronic components working purely on electrical signals such as smartphones, sound cards, and DAC exhibit relatively small distortion ratio (+- 1dB) whereas those transducers that transform electrical signals to acoustic signals such as earphones, headphones, and loudspeakers exhibit much greater distortion ratio (+- 20dB).  

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Distortion ratio for each component (compared with frequency response data only)

 

For this reason, the most effective way to enhance sound quality is to invest in acoustic devices such as earphones, headphones, and loudspeakers where you can reap the most benefits. 

 

[Ideal vs. Reality]

For those wanting to enjoy hi-fi sound, the hi-fi earphones/headphones are generally quite expensive, ranging anywhere from $500 to $2,000. 

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beyerdynamic T1, excellent performance but very high price too.

 

 

 [Solution]

How do you enjoy hi-fi sound with fairly inexpensive earphones/headphones under $20? By generating compensating signals using a parametric equalizer according to the frequency response of the earphone/headphone, the sound that reaches human ears will be near perfect hi-fi sound.  

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Conceptual picture for sound compensation.  

 

Because using professional measuring equipment to determine the characteristics of the product and determining the best possible solution based on the gathered data require thorough knowledge and expertise in acoustics and electronics, we created Accudio™ which lets you playback your music in near perfect hi-fi sound without any hassle. All you provide is the brand and the model, and your earphone/headphone will start delivering near perfect hi-fi sound to your ears.

 

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How Accudio™ works.

 

In this way, you can boost the performance of your earphones very easily. You just select company name and model name of your earphones in Accudio™ .

 

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 Accudio™ Splash Screen

 

 

Accudio™, the most convenient and cost effective way to enjoy hi-fi sound. 

 

 

03

2012-Aug

Accudio™ Key Features.

Developer: Accudio™ IP ADRESS: Views: 74660

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1.Reference Mode (Maximize Performance)
Accudio™ converts the sound from your current earphone/headphone to near perfect hi-fi sound using the optimized settings based on the data acquired using high precision measuring equipment. (The grade of final sound is varied according to your earphones. please refer to the link.)

 

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Original : Boomy (@Bass) and ripples (@High) / Applied : Flat and smooth

 

 

2.FLAC, OGG Support
Accudio™ supports the lossless FLAC files, as well as the OGG files which currently cannot be played in iOS. Simply copy the desired FLAC file or OGG file to a local folder in Accudio™, and you can enjoy the music without re-encoding. Accudio™ also supports iPod music files and libraries.

 

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Accudio™ support FLAC  and OGG files too.

 

 

3.Simulation Mode
If you want to experience the true high quality sound from the top-of-the-line earphones/headphones, try the “Simulation Mode” in Accudio™. It reproduces sound almost identical to the actual sound reproduced using the top-of-the-line products.

 

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Accudio™ reproduces simulation sound for each product. 

 

 

4.Custom Mode
If you are not completely satisfied with the suggested settings provided by the team of experts at Golden Ears, try the “Custom Mode” where you can completely customize all settings to your liking. Real-time preview graphs along with the set values and parametric equalizer are all at your fingertips. 

 

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Accurate parametric equalizer

 

 

5.Multiple Language Support (for tag information)
Accudio™ supports multiple language where it displays the album, artist, and lyrics of the music file in the selected language.

 

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Accudio™, the most convenient and cost effective way to enjoy hi-fi sound. 

 

 

03

2012-Aug

How we measure earphones and headphones.

Developer: Accudio™ IP ADRESS: Views: 61794

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[System Configuration]

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 [Test Equipment]

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Bruel & Kjaer Type 4128C HATS (Head and Torso Simulator)

 

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Bruel & Kjaer Artificial Ear Type 4152

 

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GRAS Artificial Ear Type 43AC

 

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GRAS IEC711 Coupler 

 

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Bruel & Kjaer Type 2669 Microphone pre-amplifier

 

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Bruel & Kjaer NEXUS Conditioning Amplifier

 

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Earthworks M30 Measurement Microphone

 

 

Accudio™, the most convenient and cost effective way to enjoy hi-fi sound. 

 

 

06

2012-Aug

How we make optimized settings.

Developer: Accudio™ IP ADRESS: Views: 35728

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How Accudio™ works



Accudio™ converts mediocre sound from your current earphone/headphone to near perfect hi-fi sound by,

1) accurately measuring various characteristics of your earphone/headphone,

2) performing full analysis on the measured data, and

3) determining the optimum settings for your earphone/headphone


 

 Golden Ears expert make optimized settings for each earphones and headphones according to the sequence below.

 

 

1. Measuring the data of earphones and headphones.

Golden Ears measures earphones and headphones using professional measuring equipment to determine the characteristics of the product and determining the best possible solution based on the gathered data require thorough knowledge and expertise in acoustics and electronics.

 

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This kind of deep (due to comb filter effect) is not compensable.

 

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deep insertionmedium insertion, shallow insertion

Settings for compensation must be made properly  

 

 

2. Simulation Program for accurate compensation

Golden Ears' simulation program load measured data of earphones and headphones. And it shows frequency response graph. And it calculates the final response of actual data and settings. Expert at Golden Ears can make optimized settings for each product through this program.  

 

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Original response and  Simulated (= original response + settings response)  response

 

 

3. Double checking with actual equipment

Golden Ears double check actual data with our test equipment. And if there is a gap between simulation and actual, we tuned our settings according to actual data.

 

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Measured data.

  

 

Accudio™, the most convenient and cost effective way to enjoy hi-fi sound.