Search results
Results from the WOW.Com Content Network
The BSA-recommended procedures provide a "best practice" test protocol for professionals to follow, increasing validity and allowing standardisation of results across Britain. [ 8 ] In the United States, the American Speech–Language–Hearing Association (ASHA) published Guidelines for Manual Pure-Tone Threshold Audiometry in 2005.
Noise measurement can also be part of a test procedure using white noise, or some other specialized form of test signal.In audio systems and broadcasting, specific methods are used to obtain subjectively valid results in order that different devices and signal paths may be compared regardless of the inconsistent spectral distribution and temporal properties of the noise that they generate.
Sansevieria is a historically recognized genus of flowering plants, native to Africa, notably Madagascar, and southern Asia, now included in the genus Dracaena on the basis of molecular phylogenetic studies.
Audiometry (from Latin audīre 'to hear' and metria 'to measure') is a branch of audiology and the science of measuring hearing acuity for variations in sound intensity and pitch and for tonal purity, involving thresholds and differing frequencies. [1]
The blue-green leaves of D. pinguicula are covered in a thick waxy cuticle, and contain the deepest stomata of any former Sansevieria species. [4] The leaves are arranged in a rosette and lunate in cross section. The leaves can be 12–30 cm in length, 2.8–3.5 cm thick, and are tipped with a single sharp spine.
Dracaena hanningtonii, synonym Sansevieria ehrenbergii, [1] (blue sansevieria, sword sansevieria, oldupai, or East African wild sisal) is a flowering plant which grows in northeastern and eastern tropical Africa (Djibouti, Eritrea, Ethiopia, Kenya, Somalia, Sudan and Tanzania) and the Arabian Peninsula (Oman and Saudi Arabia). [1]
Dracaena pethera, synonym Sansevieria kirkii, [1] also known as the star sansevieria or the snake plant, [2] is a succulent plant native to Tanzania and the surrounding region in East Africa. Description
Those who test and evaluate equipment can be roughly divided into two groups: "Objectivists", who believe that all perceivable differences in audio equipment can be explained scientifically through measurement and double-blind listening tests; and the "Subjectivists", who believe that the human ear is capable of hearing details and differences ...