Here are a few quotes I rounded up recently of the use of the term Cardiphonia in theological literature.
from Hymns of the Church universal [selected by J. and E.A. Rylands].
The Book of Psalms has well been called the Cardiphonia of the Church. In it the people of God through all time have recognised the voice of their own hearts, in joy and sorrow, conflict and victory, prayer and praise. It can never be superseded for its inspiration is Divine; it can never be obsolete, for its varied tones express all that is best and profoundest in our humanity.
The Psalms belong to the home and to the sanctuary; they breathe the emotions of the solitary soul; they utter the gladsomeness of assembled multitudes. Their Miserere is for every sinner in his penitence; their Hallelujahs echo through all generations.
Other hymns have their day; fashions in psalmody, as in all else, are mutable. Some strains that charmed us in childhood are already becoming flat and unprofitable to our successors: the time may even come when “Rock of Ages” will be thought inadequate to the aspirations of the soul, and “Jerusalem the Golden” shall cease to charm the weary heart. But the Psalms can never die; and while in themselves they are the best expressions of faith and piety, they will always be the highest model for all our hymnody. The nearer to this high standard, the more truly will every Christian lyrist speak to the heart of the universal Church.
Our English Bible: Its Translations and Translators, by John Stoughton,
“The Psalms formed so important a part of the church service, and so powerfully touched the hearts of men, that we do not wonder more attention was paid to them by our forefathers than to any other portion of Holy Writ. It is very remarkable that the Psalms have in all ages drawn towards them the affections of devout minds, and have been a true cardiphonia to mankind in general; so that in this fact we have a satisfactory answer to objections brought against them in modern times.”
The Catholic Presbyterian, By PROFESSOR W. G. BLAIKIE, D.D
“But heaven help the presbyterian congregation whose officiating ministry is other than he ought to be; for no earthly remedy is theirs. They have no time-honored form to fall back upon. The prayers of Ambrose and Augustine, Athanasius and Chrysostom, are lost chords in their cardiphonia. The minister must pray in his own poor shambling speech, choose his psalms and chapters in whatever eccentric way he pleases, pour forth his own ill-digested thoughts in ill-compacted paragraphs. The ordering of the whole service is left to his sole discretion. There may be better readers than he in the congregation, but he must read; better framers of prayer, but he must pray; better orators, but he must preach. Then again, if he has entrusted his thoughts to manuscript, it will be all the better, in the view of the average congregation, that he should make a second entrustment of them to his memory, and give forth, as impromptus and inspirations, what are, after all, but laborious recollections.”