![]() ![]() Noise stimuli: We obtained 8-channel background noise audio files from the European Technical Standard Institute (ETSI) database, which accompanies the technical specification for measuring the performance of active noise cancellation headsets (ETSI TS 103 640, 2020). HATS is widely used in electroacoustic tests of consumer audio products, hearing aids, and hearing protectors. Audio recordings were obtained using the B&K Head and Torso Simulator (HATS) Type 4128C mannikin with a built-in ear simulator (standard IEC 60318-4 (711)), as shown in Figure 1. Noise was presented at 0°, ±45°, ☙0°, ☑35°, and 180°, at 55, 65, 75, and 85 dBA, calibrated using a free-field microphone located at the center of the array. Study methodsĪcoustic laboratory testing measured the amount of attenuation achieved with AirPods Pro 1 and 2 with different device settings and noise conditions.Įquipment and set-up: Acoustic measurements were carried out in a laboratory test room with loudspeakers in a horizontal circular array of diameter 3.4m. One-third octave power spectrum of background noise received at the eardrum with AirPods Pro inserted and ANC turned off. ![]() ![]() The effect of Passive attenuation of AirPods Pro. 3,4 The findings offer valuable insights into the potential benefits of AirPods Pro in protecting against noise-induced hearing loss and further enhancing listening experiences in noisy environments, especially for people with hearing difficulties. We evaluated the ANC performance of the popular Apple AirPods Pro 2 earbuds through acoustic measurements in the laboratory, building on our previous work that evaluated the customized amplification and directionality features of the original AirPods Pro. This reduces environmental noise levels, protecting hearing and making listening to headphone audio in noisy environments easier. By using outward-facing and inward-facing microphones on the headphones to pick up ambient noise, ANC generates inverted, “anti-phase” sound waves to cancel the noise. As a result, they face significant communication challenges in noisy conditions.Īctive noise canceling (ANC) headphones offer an effective solution to prevent environmental noise from reaching the ear canal. These individuals experience a lower tolerance to loud noise levels and have degraded and sluggish neural responses when exposed to loud sounds, reducing their ability to easily access speech information. People with hearing impairment are particularly vulnerable to the negative impacts of prolonged exposure to loud environmental noises. Test room set-up with 8 speakers equally spaced in a circular array. In fact, it is estimated that over 1 billion young people are at risk of hearing loss from recreational listening. Increased use of smartphones as personal audio devices for extended periods, particularly in noisy environments or engaging in recreational activities involving loud noise exposure, has increased the risk of permanent hearing damage, particularly among teenagers and young adults. While earplugs and earmuffs are mandatory in industrial workplaces to prevent noise-induced hearing loss, many people fail to use them or follow safe listening practices in their daily lives. Frequent and excessive exposure to loud sounds can harm the cells and membranes in the cochlea, leading to permanent hearing damage. Noise-induced hearing loss is a prevalent and debilitating condition that can significantly impact an individual’s quality of life and social interactions. Furthermore, the results suggest that ANC can enhance music listening and phone and video call experiences by reducing ambient noise and improving audio clarity. The results demonstrate the effectiveness of advanced ANC technology in providing hearing protection in loud environments and reducing exposure to damaging sounds that may cause hearing damage. Acoustic measurements showed that the newly released AirPods Pro 2 earbuds provided a significant 12 dB improvement in low-frequency noise reduction compared to the original AirPods Pro, with an overall average noise reduction of 27 dB across frequencies. ![]() This study evaluated the active noise cancellation (ANC) performance of the first and second-generation Apple AirPods Pro earbuds. By Nicky Chong-White, PhD, Jorge Mejia, PhD, and Brent Edwards, PhD The active noise cancellation technology in the AirPods Pro 2 earbuds effectively reduces ambient noise levels by an average 27 dB across frequencies. ![]()
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