AudioJungle has one of the world's largest, high-quality collections of sound effects to make any project sound right. You'll find all kinds of button sounds, bells, clicks, dings and more in the interface sounds category. Perhaps it's a boom, whoosh or crash you're after to create instant drama in an action movie? You'll find all these in our transitions and movement category.

The Natural Sounds and Night Skies Division supports NPS units system-wide by providing: scientific leadership to advance understanding and stewardship of natural sounds and night skies; highly specialized technical assistance; and development of policy and guidance to facilitate internal capacity building. More specifically, we provide assistance in collecting baseline data for ambient acoustic and night sky quality, identifying source specific impacts and engineered solutions to reduce, mitigate or prevent anthropogenic noise and excessive light in and around parks and national trails. We also assist with park planning, compliance, and external project reviews to help parks reduce impacts from noise and light pollution to natural and cultural resources and visitor enjoyment. The Overflights Program provides assistance related to air tour management, airspace design, military overflights, airport capacity enhancement projects, and park specific administrative flights.


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Sound Notifications help you know what happens in your home. When Sound Notifications are on, your phone will always check for sounds you want notifications about, like when a smoke alarm beeps or a doorbell rings.

If we learn we have collected or received personal information from a child under 13 without verification of parental consent, we will delete that information. If you believe we might have any information from or about a child under 13, please contact us at support@soundstrue.com.

Your opinions matter, and we encourage you to email us at support@soundstrue.com with suggestions for improving our products and services. Unless we have entered into a written contract signed by both sides concerning use of your ideas before you disclose them, you agree that we may use your voluntary submissions at our sole discretion and have no obligation to pay you for them.

The minimum is $15; the maximum is $150. However, if you wish to purchase an eGift Card for more than $150, please contact Customer Service. Email: support@soundstrue.com; Phone: 1-800-333-9185 (US only), 303-665-3151 (international).

If you cannot play these files, and your computer is otherwise set up to play musical sounds, you can use your favorite web search engine to locate a browser plug-in that works with these files. Search for the terms: "mp3 player browser" or "wav player browser"

Note: You can click on any of the photos and spectrograms on this page to view and/or save the full image. Some sounds (in particular from mysticetes/baleen whales) are very low frequency, and you may need high-quality speakers to hear the recording.

A spectrogram is a visual way to display sound. The frequency of the sound is labeled on the vertical or y-axis. Frequency is most often measured in hertz (Hz) or kilohertz (kHz). Time is shown along the bottom of the graph (the x-axis). Time here is measured in minutes and seconds, in the format mm:ss. The loudness of a sound can be seen by the color scale of the sound in the spectrogram, with lighter colors implying louder sounds.

Baleen whales generally make low-frequency (0-5kHz) sounds. These sounds are usually made in the context of mating, competition for food or territory, contact calling, or general social communication.

Summary: Toothed whales generally make high-frequency sounds (5-150 kHz). These sounds are usually made in the context of mating, competition for food or territory, contact calling, or general social communication.

Summary: Pinnipeds (seals, sea lions, and walruses) generally make a variety of sounds in the general range of 0-20 kHz. These sounds are usually made in the context of mating, competition for food or territory, contact calling, or general social communication.

Crested Caracaras are mostly silent, but when disturbed, they occasionally make a hollow rattling that sounds similar to running a stick along a fence. They throw their heads back, lifting their bills to the sky while giving a rattle. They tend to be more vocal during the breeding season.

During the baseline period, the participants were asked to relax in silence. At the end of the period a prerecorded female voice reminded them that the first stress test was about to begin. After the stress test, the female voice instructed the participants to relax and one of the four experimental sounds was presented. This switch between stress test and recovery was repeated three more times (see Figure 1).

where y is baseline corrected SCL, x is time (in seconds) and b1, b2 and b3 are constants. Figure 4 shows the fitted functions for the four experimental sounds. The fit, R2, for the nature sound, low noise and ambient noise was > 0.99, it was slightly lower for the high noise, R2 = 0.96. RMS-error for the nature, high noise, ambient and low noise sound was 0.0088, 0.017, 0.0090 and 0.0097 S, respectively. The half life recovery was calculated using Equation 1, by solving for x at the point where SCL had been reduced by half, compared with its value at x = 0 (see dotted line in Figure 4). The high noise had the longest half life of 159.8 s, the half life of the other three were 121.3 s for ambient noise, low noise 111.4 s and nature sound 101.3 s. Reliable statistical testing of individual half life values was not possible, since the estimated constants in several cases generated complex numbers, that resulted in missing data when half life values were calculated.

Skin conductance level (SCL) as a function of time, shown separately for the four sounds. Curves were fitted to the group data. Constants of Equation 1 and half life value (x) are indicated in each diagram.

The present results suggest that recovery from sympathetic arousal is affected by type of sound (nature sound versus noise). Recovery was faster during the nature sound (50 dBA) compared with the noises, including the low noise (50 dBA) and the ambient noise (40 dBA). The mechanisms behind the faster recovery could be related to positive emotions (pleasantness), evoked by the nature sound as suggested by previous research using non audio film stimuli [9]. Other perceptual attributes may also influence recovery. The Ambient noise was perceived as less familiar than the other sounds (Figure 2), presumably because it contained no identifiable sources. One may speculate that this lack of information might have caused an increased mental activity and thereby an increased SCL, compared with the nature sound (cf. [28]). An effect of sound pressure level can be seen in the difference between high and low noise, this difference is in line with previous psychoacoustic research [12] and is not a surprising considering the large difference (30 dBA) in sound pressure level.

Please find here the sounds for the LokSound V3.5 decoder, LokSound XL V3.5, LokSound micro V3.5, LokSound M4 V3.0 and LokSound V3.0 decoder. You also find here sounds for many locos of Brawa, Mehano, Roco, etc.

The LokSound2 decoder was introduced in 2001 and was a huge success: It was installed in many locos, e. g. Mehano or Roco. Here you find all sounds for the second generation of LokSound - also for XL V2.1.

In 1999, the LokSound "classic" decoder laid the foundations for ESU: He was not only the first LokSound decoder in due time, but also one of the first ESU products for model railway. Here you can still download appropriate sounds for your locos.

Tinnitus is commonly described as a ringing sound, but some people hear other types of sounds, such as roaring or buzzing. Tinnitus is common, with surveys estimating that 10 to 25% of adults have it. Children can also have tinnitus. For children and adults, tinnitus may improve or even go away over time, but in some cases, it worsens with time. When tinnitus lasts for three months or longer, it is considered chronic.

The symptoms of tinnitus can vary significantly from person to person. You may hear phantom sounds in one ear, in both ears, and in your head. The phantom sound may ring, buzz, roar, whistle, hum, click, hiss, or squeal. The sound may be soft or loud and may be low or high pitched. It may come and go or be present all the time. Sometimes, moving your head, neck, or eyes, or touching certain parts of your body may produce tinnitus symptoms or temporarily change the quality of the perceived sound. This is called somatosensory (pronounced so-ma-toe-SENSE-uh-ree) tinnitus.

Most cases of tinnitus are subjective, meaning that only you can hear the sounds. In rare cases, the sound pulsates rhythmically, often in time to your heartbeat. In these cases, a doctor may be able to hear the sounds with a stethoscope and, if so, it is considered to be objective tinnitus. Often, objective tinnitus has an identifiable cause and is treatable.

One leading theory is that tinnitus can occur when damage to the inner ear changes the signal carried by nerves to the parts of your brain that process sound. A way to think about this is that while tinnitus may seem to occur in your ear, the phantom sounds are instead generated by your brain, in an area called the auditory cortex.

Next, you may be referred to an otolaryngologist (commonly called an ear, nose, and throat doctor, or an ENT). The ENT will ask you to describe the tinnitus sounds and when they started, and will examine your head, neck, and ears. You might also be referred to an audiologist, who can measure your hearing and evaluate your tinnitus.

Stressed plants show altered phenotypes, including changes in color, smell, and shape. Yet, airborne sounds emitted by stressed plants have not been investigated before. Here we show that stressed plants emit airborne sounds that can be recorded from a distance and classified. We recorded ultrasonic sounds emitted by tomato and tobacco plants inside an acoustic chamber, and in a greenhouse, while monitoring the plant's physiological parameters. We developed machine learning models that succeeded in identifying the condition of the plants, including dehydration level and injury, based solely on the emitted sounds. These informative sounds may also be detectable by other organisms. This work opens avenues for understanding plants and their interactions with the environment and may have significant impact on agriculture. 2351a5e196

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