What's the difference between descant and echo?

Descant


Definition:

  • (v. i.) Originally, a double song; a melody or counterpoint sung above the plain song of the tenor; a variation of an air; a variation by ornament of the main subject or plain song.
  • (v. i.) The upper voice in part music.
  • (v. i.) The canto, cantus, or soprano voice; the treble.
  • (v. i.) A discourse formed on its theme, like variations on a musical air; a comment or comments.
  • (v. i.) To sing a variation or accomplishment.
  • (v. i.) To comment freely; to discourse with fullness and particularity; to discourse at large.

Example Sentences:

  • (1) Tony Blair added his characteristic descant, adding " We have imbibed deeply of the Olympic spirit … in throwing timidity to the winds we have rediscovered a spirit that is our own ".
  • (2) In a group of cases in which the symptoms had lasted a few months only a displacement towards high frequencies ("descant" displacement) was revealed.
  • (3) Hyperbolic”, sings George, while his friend David does descant, and the massed bands of Fleet Street march into battle.
  • (4) Yet Ukip – from the very beginning – played a racist descant on top of this tune of justifiable grievances.
  • (5) And yet there's a descant in Perth to the major-key optimism that has marked every SNP conference in the last few years.
  • (6) It will certainly bring the contest to succeed Mr Cameron closer – that is the loud descant to everything that is happening among the Tories at Westminster at the moment, as Mr Johnson’s antics demonstrate.
  • (7) Vocal chords will be lubricated with mulled wine and those attempting the dog-whistle Ding Dong descant would do well to consult the pub’s superior malt whisky collection in advance.
  • (8) Unnoticed by anyone, he maintains a gloomy descant ("A dollar is still a lot of money"; "I've suffered from depression all my life"; "I am dubious") to their falsely cheerful exchanges.
  • (9) That's why the opening of the Hockney show has been taking place to a not particularly subtle descant of propaganda and provocation from the great man himself.
  • (10) Indeed, Rona Fairhead, the current chair and once a favoured contributor to George Osborne’s Treasury deliberations, seems as miffed as anyone, while Sir Christopher Bland and Sir Michael Lyons sing transparency’s descant at the back of the chorus.

Echo


Definition:

  • (n.) A sound reflected from an opposing surface and repeated to the ear of a listener; repercussion of sound; repetition of a sound.
  • (n.) Fig.: Sympathetic recognition; response; answer.
  • (n.) A wood or mountain nymph, regarded as repeating, and causing the reverberation of them.
  • (n.) A nymph, the daughter of Air and Earth, who, for love of Narcissus, pined away until nothing was left of her but her voice.
  • (v. t.) To send back (a sound); to repeat in sound; to reverberate.
  • (v. t.) To repeat with assent; to respond; to adopt.
  • (v. i.) To give an echo; to resound; to be sounded back; as, the hall echoed with acclamations.

Example Sentences:

  • (1) Type 1 changes (decreased signal intensity on T1-weighted spin-echo images and increased signal intensity on T2-weighted images) were identified in 20 patients (4%) and type 2 (increased signal intensity on T1-weighted images and isointense or slightly increased signal intensity on T2-weighted images) in 77 patients (16%).
  • (2) Streaming is shown to occur in water in the focused beams produced by a number of medical pulse-echo devices.
  • (3) That’s a criticism echoed by Democrats in the Senate, who issued a report earlier this month criticising Republicans for passing sweeping legislation in July to combat addiction , the Comprehensive Addiction and Recovery Act (Cara), but refusing to fund it.
  • (4) Sawers's views are echoed by both US and Israeli officials.
  • (5) Echocardiographic findings included an abrupt midsystolic, posterior motion (greater than 3 mm beyond the CD line) in five patients, multiple sequence echoes in six, and posterior coaptation of the mitral valve near the left atrial wall in six.
  • (6) These findings echo many of our own recent National Training Survey results , and raise concerns not just for trainees but also for patients and employers.
  • (7) A method using selective saturation pulses and gated spin-echo MRI automatically corrects for this motion and thus eliminates misregistration artifact from regional function analysis.
  • (8) Ejection fraction, %deltaD, and Vcf by LAO cineangiograms and echo were uniformly higher than corresponding measurements from RAO angio, and were often normal in the presence of other indicators of significant left ventricular dysfunction.
  • (9) A relation between ejection fraction (EF) and the echo minor dimension measurements in end diastole and end systole was formulated, which permitted estimation of the EF from the echo measurements.
  • (10) That motivation is echoed by Nicola Saunders, 25, an Edinburgh University graduate who has just been called to the bar to practise as a barrister and is tutoring Moses, an ex-convict, in maths.
  • (11) Echo delay discrimination by the bat Eptesicus fuscus had been investigated in an experiment with simulated targets jittering in range (Simmons 1979).
  • (12) These echoes, however, are not associated with acoustic shadowing.
  • (13) Protriptyline also widened the ventricular echo zone and allowed easy induction of long runs of ventricular tachycardia.
  • (14) A "visionary leader," said Tony Blair; "one of the greatest leaders of our time," echoed Bill Clinton.
  • (15) M-mode and two dimensional echocardiography demonstrated abnormal echoes in the left atrium, the density being 22.7 Hounsfield Unit.
  • (16) An unusual appearance of echoes behind the aorta bulging into the left atrium in diastole on both the M-mode and cross-sectional echo suggested this diagnosis prior to cardiac catheterization.
  • (17) Euromaidan was a delayed echo of the social unrest wave , driven by the country's economic failure; it collided with a diplomatic situation that was already fractious over Syria.
  • (18) Small oval cysts (less than or equal to 1 cm) with strong echo were all diagnosed colloid goiter.
  • (19) In the course of doing routine echocardiograms on patients with mitral prosthetic valves, we observed peculiar intracavitary echoes within the left ventricle.
  • (20) The spin-spin relaxation time T2 may be estimated using multiecho pulse sequences, but the accuracy of the estimate is dependent on the fidelity of the spin-echo amplitudes, which may be severely compromised by rf pulse and static field imperfections.