What's the difference between murmur and noise?

Murmur


Definition:

  • (v. i.) A low, confused, and indistinct sound, like that of running water.
  • (v. i.) A complaint half suppressed, or uttered in a low, muttering voice.
  • (v. i.) To make a low continued noise, like the hum of bees, a stream of water, distant waves, or the wind in a forest.
  • (v. i.) To utter complaints in a low, half-articulated voice; to feel or express dissatisfaction or discontent; to grumble; -- often with at or against.
  • (v. t.) To utter or give forth in low or indistinct words or sounds; as, to murmur tales.

Example Sentences:

  • (1) The sounds were loudest along the left sternal border, exhibited an increase in intensity during inspiration and were associated with right atrial gallop sounds and with murmurs of tricuspid regurgitation.
  • (2) Based on initial auscultatory findings, patients were divided into: (1) single or multiple apical systolic clicks with no murmur (n = 99); (2) single or multiple apical systolic clicks and a late systolic murmur (n = 129); and (3) single or multiple apical clicks and an apical pansystolic murmur or murmur beginning in the first half of systole (n = 63).
  • (3) In the reported case the murmur grew in the beginning and then disappeared spontaneously.
  • (4) The following factors of these patients were analyzed: age, sex, civil status, socio-economic level, occupation, family antecedents, personal antecedents, smoking, alcoholism, presence of cardiac murmurs, arrhythmias, and electrocardiogram.
  • (5) The clinical history of recurrent bronchitis and dyspnoea during exercise, the presence of right parasternal murmur with normal heart size and normal blood gases justified the execution of an arteriovenous thoracic angiography which revealed the presence of a cirsoid aneurysm supplied by the internal and external mammary arteries.
  • (6) We report a case of a 17 year old boy who was referred for evaluation of a large anterior mediastinal mass, causing dyspnea and cough and resulting in a harsh systolic murmur.
  • (7) Although the continuous murmur is an unusual sign in patients with pulmonary embolism, its auscultation is often quite distinctive, and its appearance may lead to more definitive diagnostic studies when the presentation or associated clinical findings are nonspecific.
  • (8) The patient was asymptomatic and a heart murmur and abnormal electrocardiogram were discovered incidentally.
  • (9) Thus, the murmur of MR derives its prognostic significance from integration of multiple clinical, radiographic and electrocardiographic characteristics.
  • (10) Patent ductus arteriosus murmurs developed in shielded patients at a later date, they required less vigorous treatment (ie, indomethacin), and they had shorter hospitalizations (74 v 85 days; P less than .05).
  • (11) Healthy women students who asked for oral contraceptives were carefully examined to ascertain whether they had a cardiac murmur.
  • (12) The clinical picture was relatively nonspecific, and 32% of the patients had no heart murmurs initially.
  • (13) Of the total 47 episodes, carditis was manifested by a significant murmur without previous RF or any known rheumatic heart disease in 40%; change in the character of a murmur under observation or the appearance of a new murmur in 15%; and acute pericarditis in 19%.
  • (14) Acoustic information about the place of articulation of a prevocalic nasal consonant is distributed over two distinct signal portions, the nasal murmur and the onset of the following vowel.
  • (15) A 59-year-old woman hospitalised because of dyspnea and a heart murmur in a context of pyrexia was found to have evidence of obstruction of the pulmonary arterial system, clearly defined by ultrasonography, catheterisation and angiography and Imatron scan.
  • (16) All murmurs contained dominant frequencies that varied with time.
  • (17) Immediately after the implantation of a temporary transvenous right ventricular pacemaker, a high-pitched systolic musical murmur was heard at the lower left sternal border.
  • (18) Six patients had no audible murmur; four had grade 1 to 2 innocent murmurs.
  • (19) We correlated the intensity and timing of murmur with maximal flow velocity, acceleration time and other parameters.
  • (20) The patient presented with severe angina pectoris and the main physical findings were absence of the closing click of the prosthetic valve and the presence of systolic and diastolic aortic murmurs.

Noise


Definition:

  • (n.) Sound of any kind.
  • (n.) Especially, loud, confused, or senseless sound; clamor; din.
  • (n.) Loud or continuous talk; general talk or discussion; rumor; report.
  • (n.) Music, in general; a concert; also, a company of musicians; a band.
  • (v. i.) To sound; to make a noise.
  • (v. t.) To spread by rumor or report.
  • (v. t.) To disturb with noise.

Example Sentences:

  • (1) In order to control noise- and vibration-caused diseases it was necessary not only to improve machines' quality and service conditions but also to pay special attention to the choice of operators and to the quality of monitoring their adaptation process.
  • (2) For each temporal position of the independent noise, discriminability was a function of the ratio of the duration of the independent noise (tau) to the total burst duration.
  • (3) The first group was reared in complete darkness while the second one was subjected to permanent noise.
  • (4) Mild, significant improvement was noted in one of the hearing components, "attenuation," and an adverse effect was shown on "distortion," owing to noise.
  • (5) It was found that there was a substantial increase in mortality rates in the area under the jets where there was large noise radiation.
  • (6) Noise exposure and demographic data applicable to the United States, and procedures for predicting noise-induced permanent threshold shift (NIPTS) and nosocusis, were used to account for some 8.7 dB of the 13.4 dB average difference between the hearing levels at high frequencies for otologically and noise screened versus unscreened male ears; (this average difference is for the average of the hearing levels at 3000, 4000, and 6000 Hz, average for the 10th, 50th, and 90th percentiles, and ages 20-65 years).
  • (7) The effects of noise on information processing in perceptual and memory tasks, as well as time reaction to perceptual stimuli, were investigated in a laboratory experiment.
  • (8) As a result of measures taken to reduce artifacts and to improve the signal-to-noise ratio, the measurements were performed reliably, with little inconvenience for the patients; all measurements could be used for analysis.
  • (9) For frozen noises, the same sample of noise was presented throughout a block of 50 trials; for the random noises, different samples of noise were used in each interval of the trials.
  • (10) Hospital noise has repeatedly been demonstrated to exceed levels recommended by the Environmental Protection Agency.
  • (11) Two different mental stressors were used: a mental arithmetic task with low stimulus intensity and one with high stimulus intensity characterised by more challenging instructions, a more competitive situation, and exposure to affective noise.
  • (12) In one normal ear, ten noise trauma ears, 11 Meniere disease ears, and 24 eighth nerve lesion ears to reflexes or reflex decay that were suggestive or retrocochlear lesions were observed.
  • (13) Eventually, when the noise died down, the pair made a dash for it, taking refuge in a nearby restaurant for the rest of the night.
  • (14) The subjects were exposed to manganese, iron , chromium compounds, thermal radiation, high temperature and noise.
  • (15) Similar responses were obtained with gated noise bursts and by pauses in a series of clicks.
  • (16) A philosophy student at Sussex University, he was part of an improvised comedy sketch group and one skit required him to beatbox (making complex drum noises with your mouth).
  • (17) The footballer said the noise of the engine was too loud to hear if Cameron snored but his night "wasn't the best".
  • (18) Although a clean step response or the ensemble average of several responses contaminated with noise is needed for the generation of the filter, random noise of magnitude less than or equal to 0.5% added to the response to be corrected does not impair the correction severely.
  • (19) A final experiment confirmed a prediction from the above theory that when recalling the original sequence, omissions (recalling no word) will decrease and transpositions (giving the wrong word) will increase as noise level increases.
  • (20) A grassed roof, solar panels to provide hot water, a small lake to catch rainwater which is then recycled, timber cladding for insulation ... even the pitch and floodlights are "deliberately positioned below the level of the surrounding terrain in order to reduce noise and light pollution for the neighbouring population".